How to fertilize canna, what kind of fertilizer / nitrogen, phosphorus and potassium fertilizer on canna is essential.

Canna corolla large and bright colors, so ornamental value is extremely high, but if you want to make flowers more brilliant, fertilization is the most important, such as fertilization before flowering to urge flowers and so on are one of the main means, then how to fertilize Canna? What fat is good on canna? Let's get to know each other.

What's good for canna?

When fertilizing canna, many fertilizers are needed, such as base fertilizer, nitrogen fertilizer, phosphorus and potassium fertilizer, aqueous solution of potassium dihydrogen phosphate, and so on. Each fertilizer can provide different nutrients for the growth of canna, so it is very necessary.

Base fertilizer: stable manure, compost, livestock manure, etc. are the most commonly used bases, and you can also use a mixture of phosphate fertilizer and potash fertilizer, which is generally 10% of that of the basin soil. it is a late-acting fertilizer designed to make the soil rich in nutrients.

Nitrogen fertilizer: we often hear that urea belongs to nitrogen fertilizer, it can be used as base fertilizer or seed fertilizer, it can also be used in topdressing, nitrogen is the main component of chlorophyll, so it is essential, it can also ensure that the seeds of canna are healthier.

Phosphorus and potassium fertilizer: lack of potassium will lead to the weakening of photosynthesis of canna, slow plant growth and poor root development. The stem is fragile and often lodging. The seeds and fruits are small and wrinkled, so phosphorus and potash fertilizer is not necessary if you want the canna to grow more vigorously.

Potassium dihydrogen phosphate aqueous solution: about 20 days before flowering, spraying the foliar surface with potassium dihydrogen phosphate solution can effectively promote the flower and let it produce buds smoothly when the flowering time comes.

How to fertilize canna

1. Before planting

The base fertilizer should be applied at the bottom of the basin before planting, or it can be mixed with the basin soil.

2. The period of vigorous growth

Canna grows faster in spring and summer, so how to fertilize canna at this time? Thin nitrogen or phosphorus and potassium fertilizers are needed 3-4 times a month.

3. After reproduction

After the canna is planted separately, it is generally not necessary to apply fertilizer immediately. You can wait until the plant has grown 5-6 new leaves, and then apply fertilizer, usually once every 15 days.

4. Before flowering

How to fertilize canna before flowering? When buds are not produced 20-30 days before the scheduled flowering date, foliar spraying with 0.2% potassium dihydrogen phosphate solution can promote flowering.

The strongest universal calendar is a must for florists!

It's November, so let's introduce the November calendar first.

November Calendar

◎ weather features: the Beginning of Winter and Lesser Snow in November. Severe frosts are common in the north, and ice appears sooner or later; in the south, there are cold waves and low-temperature frosts from time to time.

◎ flower events this month should be based on the habits of all kinds of flowers and local climatic conditions, according to local conditions to do a good job of anti-freezing and air-drying. Overwintering perennial flowers in the open field, such as peony, hairpin, iris, day lily, Sedum (eight treasures), golden chrysanthemum, hollyhock, lotus, peony and so on, can survive the winter safely by applying organic fertilizer and pouring enough frozen water. The alpine and dry place should be covered with horse dung or firewood to protect. Autumn sowing and spring blooming annual or biennial flowers such as calendula, violets, pansy, goldfish grass, daisies, fluke, kale, etc., need artificial planting in the north and protected areas in the south. It can also be cultivated in greenhouse as cut flowers or potted flowers in winter and early spring.

◎ open-field woody flowers such as rose, pomegranate, flowers and shrubs, cut off the old, weak, sick and residual branches, do not make strong pruning in cold areas, and reshape them again in the coming spring, support the soil along the base of flowers and trees to meet frozen water, peony flowers before soil moisture appropriate watering, not too wet. The newly planted seedlings can be protected by large flowerpots and cover the pots in the depths of winter. Potted plum blossoms, green peaches, in the middle of the month into the greenhouse to promote flowers, ready for New Year's Day Spring Festival flowers. Preserved plum blossoms naturally in the cold room. Potted deciduous woody flowers can be protected through the winter by entering the cold cellar according to the local climate. Strong pruning can be made before entering the cellar. The cut rose branches can be propagated by cutting in the sunny bed or low greenhouse.

Flowers in ◎ greenhouse should be placed in high, medium and low temperature rooms according to the temperature habits of different flowers. The appropriate temperature should also be adjusted according to growth or dormancy. General mixed greenhouse, also need to consider the habits of different flowers, placed in the heat source and light intensity are appropriate location.

Both the south and north of ◎ should turn over the flower border and apply organic fertilizer. Renovate the flower cultivation site, remove weeds and fallen leaves, and prevent hidden diseases and pests.

The melon and leaf chrysanthemum, primrose, sweet pea and lotus in ◎ greenhouse are in the seedling stage, so pay attention to water control, soil loosening, ventilation and a small amount of fertilization. Gentleman orchid, cyclamen, four seasons crabapple, geranium and so on is the peak period, pay attention to topdressing, appropriate watering.

The exhibition of chrysanthemum in the north and south of ◎ this month is the suitable time for introduction of bud cuttings.

December Calendar

◎ weather features: controlled by cold air. The weather is cold and dry. There is often sudden cold and frost.

◎ did a good job of pollination of Cymbidium (from late December to early March).

◎ Narcissus carving water culture (carving date depends on the number of days it takes to carve to bloom, crab claw daffodil water about 45 days, penholder daffodil water about 60 days).

◎ rose plastic pruning, keep 2-3 buds from the base up, cut off the above part.

The ◎ shaped stump bonsai removes the wire that is trapped in the skin.

◎ elm, sparrow plum and other tree stump bonsai are pruned in winter.

January Calendar

◎ weather features: constantly attacked by a strong cold spell, the lowest temperature of the year. The climate is cold and dry.

◎ blossoms: spring plum, camellia, daffodils, primroses, daisies, Ruixiang, calendula, cold orchid, spring orchid, cicada orchid bloom one after another.

◎ cutting: pomegranate, wood hydrangea, plum, geranium, rose, rose, wood incense, rhododendron, cherry blossom, peach blossom, ten sisters, carnation and so on.

◎ ramets: wax plum, magnolia, purple magnolia, wood incense, wisteria, rhododendron, daffodils, hyacinths and other ball newspaper flowers.

◎ pressing: rose, Rose, Lingxiao, Muxiang, Ditang and so on.

◎ adjusts the planting of deciduous flowers and trees, planting or potting spring blooming flowers: carnation, pansy, goldfish grass, osmanthus bamboo incense, Gaoxuelun, cornflower, swallows, calendula, daisies, melon and leaf chrysanthemum, Flukao and so on.

◎ strengthens greenhouse management and pays attention to watering and ventilation. Flower promotion in greenhouse: rhododendron, magnolia, pedicel begonia, poinsettia and so on.

◎ flower bed replacement: daisies, marigolds and so on. Dormant flowers turn over the soil and Peiyong, apply base fertilizer and prevent cold. Trim hedges, flowers and shrubs, disease, insect and withered branches.

◎ others: 1. The use of heating, plastic bags and other methods to do a good job of cold prevention of flowers.

two。 Indoor warm flowers should control the amount of water to keep the basin soil dry. 3. Potted flowers overwintering in the open air should be watered enough to prevent frost damage when the cold current strikes. 4. Do a good job of turning over the flower planting land, and apply enough base fertilizer. 5. The bonsai of tree stump is made into plastic.

February Calendar

◎ weather features: the temperature rises slowly, but there is still a cold snap, the weather is cold and rainy.

◎ continues to do a good job in protecting flowers from cold.

◎ excavates deciduous and coniferous stumps in the field.

◎ rhododendron, elm, Finch plum, Tianzhu, rose, kumquat, etc.

◎ deciduous tree stump bonsai turn pot.

◎ five needles pine, brocade pine ventral grafting propagation (from late February to early March).

March Calendar

◎ weather features: it was stinging and the Spring Equinox in March, with the highest temperature reaching 27 or 8 degrees Celsius and the lowest minus 45 degrees Celsius. It is the time of alternation of cold and warmth. The temperature is getting warmer gradually, but sometimes warm and sometimes cold, cloudy and rainy.

◎ daffodils, Chunlan, Daphne, plum blossom, crab claw orchid, rabbit flower, melon leaf chrysanthemum, primrose, etc., are in full bloom and should maintain a certain amount of light and temperature. When the temperature is higher during the day, windows can be opened for ventilation, so that indoor air circulation, basin soil should not be too or too wet, should be kept moist.

◎ camellias are in full bloom. Should pay attention to the room temperature is not too high, sunshine time is not too long, indoor air circulation, pot soil is not too or too wet; remove too many buds, control plants bloom in batches.

◎, prepare the potted flowers to go out of the room. When the temperature rises, the indoor open the window, accept the outdoor sun and air, make it gradually adapt to the environment, ready to leave the room in April.

◎ Baizhilian, Lingjian lotus, Magnolia and kumquat were pruned and removed, and nitrogen and phosphorus fertilizers were applied to promote their growth, bud growth and flowering.

◎ continues to produce bonsai stumps. And do a good job of turning the evergreen broad-leaved tree stump bonsai.

◎ cuckoo, Yingchun, Ruixiang, hanging orchid and other flowers turn the pot.

◎ rose on pot, pot planting lotus ramet.

April Calendar

◎ weather features: April Qingming Festival, Grain Rain, warm air forces become stronger, mild weather, Rain Water more, into the spring, when the flowers are busy with solar terms. Different climatic regions need to adapt measures to local conditions.

Herbaceous flowers in the flower bed of ◎ in summer and autumn, such as Xiaoli flower, red string, zinnia, emerald chrysanthemum, etc., are sown and cultivated in the open field when the ground temperature is 10-18 degrees. After planting grass flowers in autumn last year, calendula, pansy, and goldfish grass strengthened water and fertilizer management after the Qingming Festival, and Grain Rain was later transplanted to the flower bed.

◎ all kinds of perennial root flowers, canna, day lily, gladiolus, dahlia, taro and so on, can be planted at this time. Aquatic flowers, potted lotus, water lilies, etc., can be out of the room after Qingming Festival in the north. Deciduous woody potted flowers, pomegranate, crape myrtle, etc., should be pruned and changed before germination.

Fusang, Riley and Milan, raised by ◎ from the south to the north, moved out of the room after Grain Rain, due to the dry spring breeze and large temperature fluctuations in the north.

◎ annual grass flowers and magnolia, pomegranate, asparagus and other flowers sow and propagate.

◎ Phyllostachys pubescens, brown bamboo, Phoenix tail bamboo, hanging orchid, hairpin, gentleman orchid and other flowers are propagated separately.

◎ warm Milan, jasmine, epiphyllum, hanging orchid, tortoise back bamboo, crane orchid and other flowers on the pot, turn the pot.

◎ five-needle pine, black pine, golden pine and other stumps bonsai to pick buds to make the branches and leaves flat.

Mayflower calendar

◎ weather features: the Beginning of Summer and Lesser Fullness of Grain in May, the average temperature of solar terms in the middle and lower reaches of the Yellow River is 20 ℃, the temperature difference between the north and the south is close, more spring rain and less sunshine.

◎ in the indoor winter of southern flowers such as sweet-scented osmanthus, rhododendron, camellia, gardenia, Michelia and so on can be out of the room. Jasmine, Milan, Magnolia, Jiuli incense, epiphyllum, Euphorbia angustifolia, Fusang, citrus and so on are suitable to go out on a semi-cloudy day when the temperature is stable at 15 ℃ at night. After leaving the room, some flowers and trees, such as rhododendron, camellia, gardenia, orchid and fern foliage plants, need to be placed in the shade, and often spray water to the ground to keep the small environment fresh and moist.

◎ bulbous flowers such as Euphorbia angustifolia, Gladiolus, Gladiolus, onion orchid, Dahlia, etc., were planted when the soil temperature was above 15 ℃. Summer dormant bulbs such as tulips, hyacinths and fragrant cherries should be carefully managed so as not to dry up prematurely, prolong their growth time as far as possible to make the new bulbs grow strong, and wait for them to be dug up and dried around the end of the month. Cyclamen, paulownia, calla and other seeds are ripe to remove the old leaves, clean the surface of the basin soil, put cool ventilation, shelter from rain, forbid fertilizer and water, and do a good job of dormant maintenance.

◎ autumn and National Day flowers Dachui, cockscomb, marigold, fake bibcock, coral beans, petunia, Yanlai red live. A bunch of red, colorful leaf grass, Catharanthus roseus and other indoor pot sowing or sunny border seedlings will be planted outdoors this month. The large model early chrysanthemum was planted in the pot.

Powdery mildew broke out in a large area when the temperature difference between day and night in ◎ was 10 ℃ in May, which mainly harmed some flowers under the rose and shade, so it should be controlled by trimethoprim and chlorothalonil in time. Aphids and shell insects were treated with 40% omethoate 800ml 1500 times solution. Pay attention to the removal of weeds in flowerpots and cultivation sites.

◎ Camellia, rhododendron flower after fade to remove the residual flowers and topdressing mainly nitrogen fertilizer after anthesis.

◎ puts semi-shade and shade-loving flowers in a shade shed or under a big tree.

◎ foliage plants spray foliar water 2-3 times a day (March-September) to increase air humidity.

June Calendar

◎ weather features: June Grain in Beard, the Summer Solstice, entering the hot summer, the temperature is rising, the Meiyu season is coming, hot and humid, the weather is changeable, humidity is high.

Most of the famous winter and spring flowers in ◎, such as cyclamen, melon-leaf chrysanthemum, primrose, Pucang flower, Yu Meiren, Zhu Dinghong, etc., should be harvested in time and stored in a cool, ventilated and dry place.

Many summer and autumn flowers in ◎ begin to flourish, such as Fusang, pomegranate, jasmine, Milan, Prynne, Jiuli incense, and so on. Prevention and control of diseases and insect pests, comprehensive maintenance and management, pay attention to fruit Xiangyuan, bergamot, daidai, figs, etc., fertilizer should be ripe, water should be stable, do not suddenly big or small, keep the environment moist, to prevent fruit drop. Potted plum blossom, wax plum and green peach this month need to control moisture, take off the top or twist off the growth point to promote flower bud differentiation, prevent new shoots from growing, and flower branches are too long to be ornamental. Negative flowers such as orchids, camellias, four seasons crabapple, etc., pay attention to appropriate shade, keep the environment moist.

◎ summer dormancy bulb flowers such as freesia, hyacinth, tulips and other stems and leaves withered and yellow, dig out in time to dry for a day or two, store in a cool, dry and ventilated place.

◎ aquatic flowers such as potted lotus, water willow and water lilies grow sharply with the rise of temperature, phosphorus and potassium fertilizer keep up in time, and flowers bloom at the end of the month. On the National Day, the dahlia is planted in the pot, and the early chrysanthemum is planted in the pot and the main branch is fixed. Late chrysanthemum at the beginning of the month to turn the bud to renew the plant, this month most of the herbaceous flowers grow strong, woody flower branches semi-mature, warm and humid conditions, is suitable for cutting propagation. Grafting ramets of cactus succulent plants can be carried out before the hot summer and rainy season.

July Calendar

◎ weather features: Lesser Heat and Greater Heat in July, successive initial and moderate volts, north and south continuous high temperature and rainy, hot temperature, the highest temperature of the year. There are often persistent hot weather, summer drought and strong sunshine.

All kinds of flowers in ◎ must be carefully managed, and the south should pay attention to drainage and drought prevention; in the north, it is especially necessary to deal with continuous overcast days and rain, always warn against the infection of diseases and insect pests, and survive the hot heat and high humidity safely.

◎ inspects the maintenance site to eliminate the hidden danger of waterlogging in time. The shading equipment of shed curtain should be kept sparse and properly effective. The facilities for the production of greenhouses and the storage of dormant flowers need proper shading, front, rear and top windows are all opened, ventilated and dissipated.

◎ National Day dwarf sunflower, dwarf chrysanthemum sowed in the middle of the month, early chrysanthemum the last time to pick the heart and set the head. A bunch of red, dahlia, canna, cockscomb and other herbaceous flowers will stop using organic liquid fertilizer this month. Pay attention to high temperature and drought, watering and spraying, even rainy days to pour the basin. The planting pot of specimen chrysanthemum began to be ordered one after another in the last ten days. Cutting seedlings of desk chrysanthemum shall be carried out no later than the end of the month.

Magnolia and Milan, raised in the south and north of ◎, can be properly trimmed. The height of summer is strong and prosperous, and it is easy to rejuvenate quickly. Plum blossom, green peach, camellia, Michelia and other attention to restrain the water to prevent the growth, and promote flower bud differentiation, more flowers in winter and spring.

◎ has high temperature and humidity this month, so it is suitable for softwood cutting propagation of many kinds of herbaceous flowers, such as rose, Rongli, Fusang, camellia, night lilac and so on. The cutting medium should be coarse and loose, and the survival rate is high.

The midsummer of July is a period of frequent occurrence of diseases and insect pests in ◎, so we must always be vigilant, give priority to prevention, detect early and cure thoroughly. Fusarium wilt of seedlings and all kinds of spot diseases of big seedlings can be controlled by spraying leaf surface, basin soil and ground. Aphids and common leaf-eating pests were sprayed with deltamethrin and omethoate. More than two kinds of diseases and insect pests can be mixed. However, the concentration should be strictly controlled according to the instructions, and spray in the morning or evening should be chosen to prevent drug damage caused by high temperature at noon.

August Calendar

◎ weather features: earlier this month, the Beginning of Autumn, the weather turned cool, but there are often hot weather and summer drought, we still need to pay attention to drought, waterlogging, insect control and disease prevention.

The End of Heat in late ◎, the temperature dropped sharply, getting cooler and cooler, and flowers began to grow in autumn. A bunch of red, cockscomb, green chrysanthemum, morning chrysanthemum, various strains of Dahlia, "Alpine Snow", "Yanlai Hong" …... It should be shaved separately and pruned in the middle of the rose to maintain the tree potential and concentrate the nutrition of the flower branches. As the temperature drops, it gradually increases the amount of topdressing and watering, prompting flowers and strong fruits for viewing on the National Day.

◎ is busy with flowers this month, and many kinds of flowers need to be carefully cultivated and managed. The evening chrysanthemum picks the heart for the last time at the beginning of the first ten days, but the flowers are uneven later. At this time, Zhu Dinghong began to form flower buds, topdressing in time and getting twice the result with half the effort. Gladiolus and evening fragrant jade should be fertilized and preserved immediately after cutting the flowers to ensure that the flowers are straight, uniform and dense in the coming year. In autumn and winter, it is appropriate to increase the application of phosphate fertilizer to maintain bright leaves and bright fruits. Sweet-scented osmanthus is poured fully mature organic fertilizer from the middle to the middle of September, once a week before blooming. Potted camellia leaves one or two healthy buds per branch according to the size of the plant, and the redundant ones are thinned out one by one. Leaf flower twig, poinsettia with curved shape, should be strangled at noon, waiting for the branch to wilt slightly to avoid injury. When the weather is cool and stable, the adult gentleman orchid will pour the basin and change the soil.

◎ summer hibernating flower cyclamen begins to sprout in the cool autumn, so it should be poured out to change the soil. Calla lilies were planted separately. Sorrel grass is planted in the middle of the year and freesia is planted in the lower part. Autumn sowing the following spring flowering grass flowers: tricolor cocoon, calendula, carnation, metal grass, violets, etc., according to the local and cold conditions in the northern region, sowing in succession from the beginning of the month to the end of the month.

The flowers of Magnolia, Jasmine, Milan and Fusang raised in the south and north of ◎ stop blooming gradually this month, but they still need to pay attention to water and fertilizer and keep them healthy in moderation. Potted lotus has stopped blooming lotus root, pay attention to forbid fertilizer, strangling water, but the light is still uninterruptible, the following year can be leafy flowers.

September Calendar

◎ weather features: White Dew and the Autumn Equinox in September, the weather is fresh and clear, the cold air becomes active, the temperature drops, it is rainy, and autumn begins.

◎ in this period, all kinds of flowers grow vigorously, sprinkler irrigation should be diligent, fertilization should be refined. Pay attention to the dry and autumn drought, as the temperature drops, gradually increase the amount of fertilizer, which is quite beneficial to autumn flowers, winter flowers and spring flowers. At the same time, the management of flowers in the shade canopy should not be relaxed. In the vast northern areas, it is necessary to guard against clear skies and strong winds.

◎ National Day flowers with a string of red, should be according to the strength of the growth, from September 1 to 5, pick off the transparent flowers, until the festival flowers are neat, plump, prosperous. Early chrysanthemum bud can be traced back to apply a small amount of nitrogen fertilizer, enlarge the amount of water; late appropriate application of phosphorus and potassium fertilizer, properly rein in water, to ensure that the National Day flowers bloom. Dahlia blossoms in early September, and National Day coincides with the best blooming time. In the early stage, the main buds can be removed and the lateral buds can be removed, and when it is too late, the main buds can be removed and topdressing with phosphorus and potassium fertilizer to promote flowering. Other festivals with grass flowers, you can also use the same method to prolong the flowering period. Potted sweet-scented osmanthus in the north should be in full bloom on the National Day. In the greenhouse in early September, the flowering period can be delayed by keeping 16 minutes C or more at night. When you leave the room on the 25th, it will naturally cool down and the festival will be in full bloom.

All kinds of autumn sowing grass flowers in ◎ are planted in the middle of this month, which are sown in August in the north, and can be sown in the south. Greenhouse potted flowers in winter and spring, such as cyclamen, melon-leaf chrysanthemum and bract flowers, were sown this month; geraniums and upside-down golden bells began to be cut and propagated; plum blossoms and green peaches were budded and propagated from the north to the south at the beginning of this month.

Magnolia, Fusang, Jasmine and Milan raised in the south and north of ◎ are gradually moved to the leeward and sunny places to prevent early frost and wind and drought. Native tropical and subtropical flowers, such as leaf trees, and cactus plants such as crab claw orchid, which use trigonous arrows as rootstocks, are maintained in the middle of the human room to prevent cold snap attacks.

◎ all kinds of moulding chrysanthemum entered the overall management stage, with the decrease of temperature, the sunshine became shorter, the water and fertilizer increased, and all buds appeared in the last ten days. Dahlia and Great Cliff Chrysanthemum selected the first generation of foot bud cuttings to prepare for the following year.

October Calendar

◎ weather features: Cold Dew and Frosts Descent in October, the weather turned cooler and colder. The cold air strengthens, the weather is getting colder, the autumn air is crisp and sunny, and the autumn cold and early frost begin to appear.

◎ greenhouse flowers should be in the middle of the previous room. All kinds of flowers originating in the tropics begin to provide heating, heat preservation and cold protection; although all kinds of flowers originating in the middle and lower reaches of the Yangtze River are relatively cold-resistant, they cannot withstand the northern wind and dry first, and they also need to be air-dried first and decline with the fluctuation of air temperature, so pay attention to opening and closing doors and windows to maintain a suitable medium or low temperature. When the temperature drops steadily to the minimum required for flowers, heat preservation and cold protection will be provided again. At the turn of autumn and winter, all kinds of greenhouse flowers should go through the good people's houses according to the weather conditions. The temperature difference between day and night in late autumn has increased in various parts of the south, and all kinds of flowers in winter and spring have entered the stage of comprehensive management and maintenance, timely water supply, fertilization, shaping, and appropriate cold prevention according to climate change.

From the beginning of ◎ to the end of the month, all kinds of spring perennial flowers such as Hosta, Iris, hollyhock, Yingcao, Paeonia lactiflora, etc., propagate and transplant according to their roots, and peony roots are used as rootstocks for grafting and sowing propagation, and the growth and development is exuberant in the next spring. Bulbs blooming in winter and spring, tulips and hyacinths are planted in alpine areas to protect overwintering. Freesia, all kinds of sorrel roots, sorrel grass pot planting, month-end room maintenance.

◎ all kinds of flowers that bloom in spring and summer, the seeds are ripe and harvested in time, should be selected, keep pure, dry and clean. Bulbous flowers cultivated in the open field, such as late fragrant jade, canna, gladiolus, dahlia, etc., should be dug out in time to clean the soil and preserved in the human room after one or two days of drying. Potted dahlias, stop the water when you see the frost, and store them in the original pot to avoid overwintering injury. Potted Zhu Dinghong, cut off all the leaves from 3 cm above the bulb and store them in a low greenhouse. It can blossom in the greenhouse for 50 days before the Spring Festival. Zhu Dinghong sowing seedlings were directly placed in the greenhouse for maintenance and continued to grow.

◎ autumn sowing in northern China, such as Violet, Pansy, Fluke, Calendula, Golden negative Grass, etc., need to be protected by cold beds (sunny beds) to survive the winter. Cultivate hundreds of chrysanthemums with flowers a year, cliff chrysanthemums with more than three meters, select the first generation of buds to raise seedlings in early January, and maintain the greenhouse in the middle of the month. All kinds of open field overwintering flowers are fully watered in the last ten days, and the alpine areas need to be protected for overwintering.

Growing flowers in autumn, those things you don't know, practical, must see!

NO1 increases illumination

It is necessary to increase the sunshine time of flowers in autumn. Flowers placed in the shade in summer, such as brown bamboo, Brazilian iron, rubber tree, tortoise back bamboo, asparagus and so on, should be moved to a place with sunshine sooner or later in autumn. At the same time, nitrogen, phosphorus and potassium fertilizers are applied to flowers, which can not only make flowers grow sturdily and luxuriantly, but also improve their cold resistance after winter.

NO2 reduces watering

The climate in autumn is cool, the temperature difference between day and night is large, and the water evaporation of basin soil is slow. Daily watering should determine the watering times and quantity according to the climate characteristics and the growth habits of potted flowers. It is appropriate to keep the wet and dry between the basin and soil.

With the gradual decrease of the temperature, except for the autumn-sowing grass flowers that bloom in autumn, winter or early spring, such as crab claw lotus, camellia, rhododendron, cyclamen, etc., other flowers should be watered less, so that the basin soil is not dry and not watered, so as to avoid excessive water and fertilizer, root mildew and rot, causing yellow leaves to fall off, or causing branches and leaves to grow, affecting flower bud differentiation and overwintering.

NO3 pruning and shaping

There are many tender buds of potted flowers in autumn, which can not be allowed to develop. Cut off the weak branches properly so as to avoid wasting nutrients. The retained branches should be treated by leaving buds and picking buds. Potted flowers with buds in summer and autumn, such as plum blossom, wax plum and rhododendron, should not be re-pruned, and pruning can be carried out. Most flowers can be pruned and reshaped in autumn, cutting off diseased branches, withered branches, over-dense branches, taboo branches and overgrown branches, so as to lay a good foundation for potted flowers to overwinter and grow in the following year.

NO4 turn over basin and change soil

Autumn is a good time for potted flowers to turn pots and change soil. Where the basin is small and the root system of flowers and trees grows to cover the basin wall, you can turn the basin and change the soil or change the large basin to facilitate growth.

NO5 harvesting and storage

Autumn is the season for the maturity of herbaceous flower seeds, so the harvest and storage of herbaceous flower seeds should be done in time. The mother plant with strong growth and good flower color and shape should be selected for seed collection, which must be dried, wrapped and placed in an environment of ventilation, dryness and low temperature (0 ℃ to 4 ℃) for use in the coming year. Timely sowing goldfish grass, big rock tree, tulip and so on, especially begonia, primrose and African chrysanthemum which are easy to lose their germination power should be sown in autumn in time.

NO6 sowing cuttings

Melon leaf chrysanthemum, hollyhock and other herbaceous spring flowers, sowing from September to early October is the best time, pay attention to spray water after planting, keep moist, and time seedlings after emergence. Rose, jasmine, peony, peony, Milan, honeysuckle, magnolia, cinnamon and other flowers cutting, ramet, striping, grafting and so on are also better in September and October. Canna and dahlia can cut off the aboveground stems and leaves before frost, dig out the roots, remove the persistent soil, and store them in the basin 1 to 2 days later. When the basin soil is too dry, a small amount of water can be watered, but not too wet, so as not to germinate prematurely, resulting in thin spring seedlings.

NO7 to prevent diseases and dispel insects

Autumn is a good time to control plant diseases and insect pests. Before potted flowers enter the house, medicine can be sprayed to prevent overwintering diseases and insect pests. Diseases and insect pests have been found, should be targeted and thorough treatment, never let diseases and insect pests enter the room to harm flowers and trees.

NO8 enters the room at the right time

The time for potted flowers to enter the house should be different according to different flowers. Milan, jasmine, asparagus and other warm flowers can enter the room early; kumquat, plum blossoms and other slightly cold-resistant or more cold-resistant flowers can enter the room late. In addition to cold-resistant flowers such as pine, cypress and holly that survive the winter in the open air, and flowers such as red leaves and yellow clover that enjoy leaves after frost, it is better for most flowers to enter the house in front of Frosts Descent.

Five principles of fertilization in autumn

Timely fertilization of NO1

After the Beginning of Autumn, the weather gradually turned cooler. For some foliage flowers, such as asparagus, hanging orchid, cycad, etc., thin liquid fertilizer is generally applied every half a month to keep the leaves green and improve the ability to protect against the cold. For chrysanthemums, camellias, rhododendrons, etc., which bloom once a year, it is necessary to apply phosphate-based liquid fertilizer in time to ensure sufficient nutrients and make them bloom more and more. Rose, Milan and jasmine, which bloom many times a year, should be provided with enough fertilizer and water to make them blossom continuously; for some ornamental flowers, such as kumquat, bergamot, pomegranate, etc., thin liquid fertilizer dominated by phosphate fertilizer should be applied twice.

NO2 appropriate amount of fertilizer

In autumn, flower fertilization should be combined with watering. According to the principle of "applying thin fertilizer frequently", thin fertilizer is generally applied every half a month. It is divided into base fertilizer, topdressing and foliar fertilization. The base fertilizer is added with the soil when the basin is put on or changed. Topdressing is generally liquid fertilizer, such as bean cake water. Foliar fertilizer is generally available with a concentration of 0.1%-0.2%, such as potassium dihydrogen phosphate, urea and so on.

The fertilization of potted flowers should be "eat less and eat more", that is, the number of fertilization is more, the amount of fertilizer each time should be less. Generally, thin fertilizer and water are applied every 7-10 days, and 15-20 days after "the Beginning of Autumn". With the gradual growth of flowers and trees, the fertilization concentration gradually increased, such as urea application concentration gradually increased from 0.2% to 1.0%; phosphorus and potassium fertilizer increased from 1.0% to 3.0-4.0%.

NO3 controls fertilization according to season.

Flowers grow fast and flourish in spring and summer, and can be fertilized in an appropriate amount. After entering autumn, the temperature gradually decreases and the growth of flowers weakens, so we should apply less fertilizer. Fertilization should be stopped from late August to early September to prevent the emergence of a second growth peak, otherwise it is easy to make flower tissue cells delicate and lead to overwintering difficulties. If overwintering flowers are dormant in winter, fertilizer should be stopped. Potted flowers that bloom in autumn, such as dahlias, chrysanthemums, oranges, cyclamen and orchids that bloom in winter, can be applied more nitrogen, phosphorus and potassium fertilizer to promote their blooming and leafy. Pine and cypress, iron tree, brown bamboo, hanging orchid and asparagus should be fertilized 1-2 times, which can not only keep the leaves green, but also increase the ability to protect against the cold after winter. Generally speaking, before Frosts Descent, flowers that need to spend the winter in the open air should stop topdressing to avoid freezing damage.

NO4 master temperature

Potted flowers should not be fertilized before and after noon of high temperature or on rainy days. Fertilization is easy to hurt roots at this time, and it is best to apply fertilizer in the evening. When the temperature is low in autumn and winter, the slow growth of flowers generally does not apply fertilizer; when the temperature is high in summer, flowers should be fertilized more; when the temperature is high, the concentration of topdressing should be low, the dosage should be less, and topdressing with thin fertilizer water should be applied several times.

Mixed application of NO5 medicine and fertilizer

If diseases and insect pests occur during fertilization, an appropriate amount of chemicals can be added to the fertilizer solution, which can play the dual role of fertilizer to prevent diseases and insect pests.