How to do if there are bugs in cinnabar root? pest control of cinnabar root / 2 insects and 3 diseases

For cinnabar root, flower friends should be no stranger, it is a very famous traditional Chinese medicine, it can be used to treat a variety of human diseases. What is more commendable is that cinnabar root is also long and good-looking, so it is kept at home by many people. However, in the process of breeding, diseases and insect pests often appear, then cinnabar root has bugs how to do? The following are several kinds of cinnabar root pest control, let's go and have a look!

What if there are bugs in cinnabar root

In the process of conservation, cinnabar root needs to pay attention to pests and diseases to avoid damage to plants. It is understood that cinnabar root diseases and insect pests mainly include: aphids, beet moths/Spodoptera litura, root knot nematode disease, stem rot disease, root rot, their appearance will affect serious consequences. As for what to do with cinnabar root worms, after we determine the specific diseases and insect pests, we can spray drugs against them.

II. Prevention and control of diseases and insect pests of Cinnabar Root

1. Aphids

Aphids are the most common pest of indoor potted plants, and they also endanger the health of cinnabar roots. The insect generally appears in poor ventilation and poor light environment, mainly harming leaves and buds, absorbing a large amount of juice, and making leaves yellow and curled up, or even falling off.

Control methods: when aphids are few, artificial aphid prevention can be adopted, aphids are brushed off with a brush and a brush, and buried in the basin soil; when scale insects are large, 40% omethoate 1000 times solution or 50% dichlorvos 1000 times solution can be sprayed for control, spraying once every 7-10 days, and spraying continuously for 2-3 times can be effective.

2. Spodoptera exigua/Spodoptera litura

In addition to aphids, in the case of high temperature, high humidity and unventilated environment, cinnabar root will also grow moth pests, among which the most common are beet armyworm and litura armyworm. They nibble on the leaves of plants for a living. When the damage is serious, they can eat up the mesophyll, leave only the veins, and even peel off the stem cortex.

Control methods: first, timely removal of eggs and insect leaves, concentrated elimination, to reduce the source of disease; and then spray card death gram, control Taibao, agricultural land music, fast killing spirit 1000 times timely control, because this insect body wall thick, drug resistance strong, control must master early control.

3. Root knot nematode disease

In addition to long worms, cinnabar roots can also get sick when not properly maintained, such as root knot nematode disease, a root disease caused by root knot nematodes. After suffering from this disease, the fibrous root and lateral root of Cinnabar root will produce tuberous root nodes of different sizes. In addition, the disease can lead to stunting and stunting.

Control method: The disease is mainly prevented. Before planting, 15 grams of carbofuran granules with a concentration of 3% are evenly applied to the pot soil, then covered with 10 cm thick soil, and then irrigated thoroughly. Generally, various pests can be eliminated.

4. Stem rot

Cinnabar root is not cold-resistant, in winter, to control watering, once too much watering or poor drainage basin soil, coupled with indoor darkness, it is easy to cause stem rot. It is understood that cinnabar root stem rot mostly in the seedling stage, when the disease occurs, the stem of the plant will blacken and rot.

Prevention and control methods: after the above diseases are discovered, the rotten parts of lily bamboo are cut off, sulfur powder is applied, and fresh culture soil is replaced to replant. After that, move the potted plants to a ventilated sunny place, and soon the lily bamboo will return to health.

5. Root rot

If long-term in high temperature and high humidity environment, cinnabar root is also easy to break out root rot. The disease mainly harms the roots of Cinnabar Root, causing root rot, and when it is serious, the whole plant will die. It should be noted that underground pests can cause disease to worsen.

Control methods: prevention of cinnabar root rot, daily maintenance strictly follow the watering method of cinnabar root, do not water more; in the early stage of disease, can spray kasike, Yitaibao, Nongdile and other chemicals for prevention and control.

As for the prevention and control of diseases and insect pests of cinnabar root, Xiaobian introduced this. I believe everyone should know how to do it when they encounter cinnabar root worms or get sick again! In general, the cultivation method of Cinnabar Root was not difficult. As long as everyone was careful, the insects would not come looking for them. Finally, I wish everyone's cinnabar root can grow beautiful ~

The cultivation methods and precautions of Cinnabar Root (Fugui Seed)

The cultivation method of cinnabar root (Fugui seed) Temperature

Cinnabar root likes warm growth environment, the suitable temperature for growth is between 16℃ and 28 ℃. It is not too cold, so the temperature of winter can not be lower than 5℃. Moreover, cinnabar root is also not heat-resistant, summer temperatures higher than 32℃ when the growth is slow. Therefore, when cultivating cinnabar root, heat preservation measures should be taken in winter, shade should be paid attention to in summer, water should be sprayed on the plants, and ventilation should be strengthened to reduce the temperature of the growing environment.

illumination

Cinnabar root likes semi-shady environment, need bright scattered light, avoid direct sunlight. In general, it is necessary to let cinnabar root contact sufficient light, but when the sun is too strong, pay attention to shade, winter should pay attention to let cinnabar root contact the sun more, avoid fruit drop.

watering

Cinnabar root suitable for growth in wet or semi-dry environment, bogey drought, bogey water. Requirements of the growth environment of the air phase humidity between 50%~70%, in the growth period of cinnabar root, watering should be sufficient, is the pot soil wet, but not too much watering, otherwise the water in the pot will make cinnabar root rot. In winter, control watering, pot soil can not be too wet.

fertilization

In order for cinnabar root to grow well and bear beautiful fruits, fertilizer is indispensable. During the growth period can apply some nitrogen fertilizer, promote the growth of branches and leaves, before flowering can apply some phosphorus, potassium fertilizer, promote flowering. Note that after winter, fertilizer should be stopped.

Notice of cultivation of cinnabar root (rich seed) pruning

Cinnabar root has high ornamental value and needs to be pruned frequently to form a plump plant type.

Turn over the basin

With the growth of the plant, the old pot is bound to affect the further development of Cinnabar Root, which can be changed every spring and replaced with new culture soil.

pest control

Common diseases and insect pests include stem rot, root rot, blight, leaf spot, root knot nematode, scale insect, aphid and moth.

February Family Flower Guide

February is the last month of winter and the coldest period of the year after January, with average monthly temperatures ranging from-2.5 ° C (Beijing) to 4.7 ° C (Shanghai). Potted ornamental plants that can be displayed in the courtyard in the north must be quite cold-resistant species, among which woody ornamental plants include: white bark pine, cloud pine, armandi pine, Japanese fir, Japanese five-needle pine, black pine, brocade pine, euonymus, juniper, juniper, dragon cypress, firethorn, wax plum, plum blossom, ginkgo, Budi coconut, European dwarf palm, Chile wine palm, Washington palm, broad-leaved mahonia, elm, triangle maple, Lagerstroemia, etc.; In the south, it can display fig tree, canary date, long ear palm, silver date, palm bamboo, silver wattle, silver birch, ten mahonia, star anise golden plate, podocarpus, bamboo cypress, golden peach leaf coral, rufa palm, southern Tianzhu, cycad, Jinshan palm, etc. In the not-too-cold area south of the Yangtze River, some grass flowers can also be displayed, such as feather cabbage, daisy, pansy, calendula, auspicious grass, one-leaf orchid, book belt grass, dwarf lilyturf, etc. Ornamental plants displayed in the yard this month should be protected from frostbite by a variety of plant roots or frostbite pots.

Propagation of garden flowers

1. Sowing: In the double-layer plastic greenhouse with good thermal insulation performance in the courtyard, the feasible grass flower varieties are: calendula, cyclamen, dwarf sunflower, asparagus, pittosporum, begonia bulbaria, cornflower, celestial chrysanthemum, wheat pole chrysanthemum, a string of red, marigold, globeflower, peacock grass, petunia, flower water chestnut, phlox, cattail flower, snapdragon grass, golden lotus, pansy, etc. Note that the greenhouse temperature should not be lower than the lowest temperature for seed germination of different species of grass and flowers. In addition, tuberose, amaryllis seed ball can also be planted in the greenhouse at the end of February.

At the end of this month, as long as the nursery land is not frozen, woody ornamental plants that can be sown in the open field in the courtyard include magnolia, Michelia, Heather, Acer, Begonia, peony, Luanshu, safflower oil tea, horse chestnut, camphor tree, privet, Sapindus mukurosi, Ligustrum lucidum, Elaeocarpus sylvestris, palm, green tung tree, fire thorn, osmanthus flower, etc. Wisteria, clove, wintersweet, summer plum, mandarin tree, etc. that have not been stored in sand can also be sown at the end of February. The seeds of wintersweet, summer plum and mandarin tree with thick seed shells should be soaked in cold water for 24 to 36 hours before sowing, and then sown after the seeds absorb enough water.

2. Cuttings: Ornamental plant species that can be cut in the open field or covered with plastic film in the courtyard this month include: Plum blossom (refers to the annual branches of palace powder, green calyx and other varieties that are easy to root), Nantianzhu, Hibiscus hibiscus (South), Jixiang, pomegranate, golden bell, Yingchun, jasmine, June snow, hibiscus, hypericum (peach), Rustline chrysanthemum, Mahonia, Buxus, Youma stalk, Chimonanthus praecox (with heel), red-leaf plum, rose (Elizabeth, Fenghua, vine, miniature and other varieties), thick bark incense, silver bud willow, spray snowflake, gardenia flower (South), golden leaf privet, purple leaf berberine, fig, etc. Cuttage medium can be used in general sand soil, vermiculite and sand can also be used in the mixed medium.

This month, simple or double-layer plastic greenhouses with good insulation performance can be used to propagate the following ornamental plants by cuttage as long as they can maintain temperatures of not less than 5 ° C to 7 ° C: Jasmine, pearl orchid, geranium, fuchsia, Belgian rhododendron, hibiscus, tricolor plum, five-colored plum, sapphire flower, Yushu, jade leaf, fingered citron, stone lotus flower, county flower, arrow lotus flower, cold water flower, shrimp clover, trollius flower, longevity flower, dragon spit pearl, dragon boat flower, silver hair Dan (Brazil glory tree), goosefoot wood, pocket coconut, rubber tree, begonia, begonia, gray thistle (commonly known as African jasmine), fig tree, golden peach leaf coral, red laurel, a string of red, begonia, Guangdong Evergreen, Dream Vermilion Banana, Green Rose, etc. Cuttage substrate can be mud or chaff ash and sand mixed in half substrate.

3. Grafting: In the last ten days of this month, annual thick black pine seedlings are taken as rootstocks indoors, Japanese five-needle pine, Osaka pine, broccoli and the like are grafted on the belly of the rootstock matrix, and the survival rate is relatively high by covering the film with moisture and heat preservation; In Jiangnan area, when the leaf bud on the rootstock of 2-year-old wintersweet seedling grows to the size of wheat grain, it is feasible to cut and propagate excellent varieties of "Suxin","Xinkou" and "Huti" wintersweet; the survival rate is high by adopting sufficient bagging and moisture preservation measures; the survival rate is also relatively high by taking 1 - 2-year-old Zichujun as rootstock, cutting and transplanting Michelia, covering plastic film and moisture preservation; 1 - 2 year old seedlings of Acer sinensis were used as rootstock, and grafted with inflated bags. In southern China, if the temperature of greenhouse could be maintained above 20℃, Camellia oleifera and safflower oil tea could be used as rootstock, and the single bud ear was cut off and peeled to attach Camellia, and plastic bags were added for heat preservation, and the survival effect was particularly good.

4. Strip: Ornamental plant species that can be propagated under low pressure this month include plum blossom, wintersweet, begonia tibetanum, begonia hyacinth, begonia xifuensis, magnolia, gardenia, osmanthus flower, camellia, brocade flower, podocarpus, cypress, snowball, Qionghua, Yingchun, Jinzhong, hypericum, hydrangea, spray snow flower, red maple, Michelia, etc.; species that can be propagated under high pressure include red maple, camellia, elephant bark tree, white peony, Milan, etc., but the latter three can only be carried out in the greenhouse with high room temperature.

5. Plant division: The woody ornamental plant species that can be divided in this month include: Nantianzhu, Hibiscus hibiscus, Hypericum, Mahonia, Hydrangea, Begonia tibetica, Fragrance, Yingchun, Golden Bell, Cystis, Spraying Snow Flower, Spiraea safflower, Jasmine, Pearl Orchid, Tiger Spine, Magnolia, Cinnamomum multiflorum, Phoenix tail bamboo, Philippine white bamboo, Palm bamboo, Yu plum, Gardenia flower, sisal, French holly, Scircus chinensis, etc.

This month, the species of herbaceous ornamental plants that can be divided and propagated include: onion, dwarf lilyturf, ophiophora argentea, auspicious grass, hairpin, purple calyx, orchid, spring orchid, cymbidium, golden chrysanthemum, lily of the valley, sorrel, one-leaf orchid, iris, pineapple, saxifraga, clivia, money tree, arrowroot, cherub, anthurium, tortoiseshell, tendril, kidney fern, lotus peony, spider orchid, aloe, canna, guanyin lotus, etc. Note that the species that are not too cold-resistant should be carried out in a shed with good thermal insulation performance to avoid cold damage or freezing damage.

Management of Garden Flowers

1. Transplanting: Most of the flowering shrubs and garden greening trees in this month can be transplanted and planted, such as hibiscus, pomegranate, bauhinia, begonia, ginkgo, maple, wintersweet, plum blossom, magnolia, purple magnolia, Chinese sapindus, koelannia tree, acacia tree, seven-leaf plum, red-leaf plum, purple-leaf cherry, purple-leaf peach, cherry blossom, peach, crape myrtle, wisteria vine, campsia, linden tree, mandarin tree, Chinese tallow, elm plum, fragrant rose, white rhododendron, dragon claw locust, etc.

Because the weather is still quite cold this month, some evergreen courtyard trees, such as camphor tree, French holly, privet, Elaeocarpus sylvestris, Magnolia grandiflora, Osmanthus fragrans, etc., can be transplanted in Jiangnan area by conventional methods; between Jianghuai and Jianghuai, intensive shrinkage shear, large soil ball, wax sealing, trunk rope wrapping or bundle area or south tree northward movement should be adopted, preferably postponed to the middle and late March.

This month in Jiangnan area feasible transplanting planting grass species are: Dianthus, collard greens, calendula, daisy, etc.; in the north of the cold areas, Dianthus, primrose, calendula, snapdragon, pansy, daisy, etc. can be planted in pots first, put in the greenhouse, wait for spring to warm up and then take off the pots and plant them in the courtyard.

Bonsai enthusiasts can combine forestry winter afforestation soil preparation, collect wild stumps, such as Acer triangularis, Ilex holly, Ulmus chinensis, Pleione rosebud, Wisteria, Elaeagnus chinensis, Quercus mongolica, Azalea rhododendron, Vitex negundo, Euonymus pendula, Photinia chinensis, NanTianzhu, etc., after intensive shrinkage, shallow burial and high cultivation, covered with straw curtain for cold protection and moisture preservation, can be cultivated into good pile embryos.

2. Pruning: For hedges, balls, and ground-planted shrubs that have not been pruned in January, continue to seize the favorable opportunity for trees to sprout and shoot comprehensively. Hedgerow, green wall, courtyard color block, etc., according to the straight line, flat surface, angular requirements for pruning; ball and other geometric plants, according to the requirements of rounded arc, straight plane trim; for the ground planting flowers and shrubs, it is required to cut off pest branches, random branches, so that the plant tends to beautiful appearance, inner bore light transmission. Cut branches and leaves to focus on burning, can reduce the occurrence of diseases and insect pests that year.

3. Watering: special attention should be paid to watering management of ornamental plants such as flowering shrubs transplanted at the end of autumn in the courtyard. If the roots are dry, they should be watered in time; if more dust is attached to the leaves, spray water on the branches and leaves at noon in fine weather to prevent frost or freezing of the leaves in the early morning of the next day. For a small number of transplanted trees in the courtyard, after watering, straw or film can be covered within a radius of 1 to 1.5 meters near the tree stump, which can not only keep warm and moisture, but also help protect the root system.

4. Fertilization: For the ground-planted flowering shrubs in the courtyard that have not completed winter fertilization, such as osmanthus fragrans, camellia, plum blossoms, wax plum blossoms, roses, Lagerstroemia, Bauhinia, pomegranate, begonia, Michelia, Magnolia, Yingchun, Jinzhong, Hypericum, Mahonia latifolia, Nantianzhu, Pyracantha, etc., we should seize the time to excavate annular grooves at the periphery of their roots in the first ten days of this month, bury appropriate amount of cake fertilizer or compound fertilizer, generally fertilize 1 jin per plant, so as to meet the needs of continuous growth in that year; In Jiangnan area, thin fertilizer water can be added at the end of the month to promote the normal vegetative growth of ground-planted flowers transplanted at the end of autumn and early winter, such as Dianthus chinensis, cherry, phlox, pansy, calendula, hollyhock and mallow.

5. Disease and pest control: seize the time to clean up the weeds and leaves in the courtyard and burn them intensively, which can obviously reduce the occurrence of diseases and pests in that year; check the trunk of flowers and trees in the courtyard, find egg blocks, insect pupae, etc., and scrape and destroy them in time; check the plants and find branches and leaves infected with diseases and pests, and cut them off and burn them in time; spread plant ash or smoke powder to remove aphids found on the plants.

6. plowing: at the beginning of this month, we should seize the time to dig up the plots prepared for cutting, sowing or planting in the courtyard, and apply cake fertilizer, pond mud, manure, etc.(except for cutting land). After freezing, we will pull out ditches for beds in March, which can obviously reduce the harm of underground pests to seedlings in that year. In addition, the vacant plots under the courtyard trees should also be dug up, which can reduce pests and diseases, and is also conducive to the growth of flowers and trees in that year.

7. Fertilizer preparation: At the beginning of this month, vegetable cakes, bean cakes, tea cakes, chicken droppings and pigeon droppings are put into the tank pool, sealed with water for fermentation, which can be used for watering trees and potted plants in spring and summer. Pig manure, chicken manure, cake fertilizer, etc. are mixed with pond mud and garden soil and sealed for stacking. They can be used to prepare culture soil and topdressing for flowers and trees. The litter and weeds removed from the courtyard are dried and piled up and burned with the garden soil. The formed burning soil can be used for seeding and covering soil, and can also be used for preparing culture soil.

8. Seed collection: there are not many seeds that can be collected in February, only those flowers and trees whose fruits can last for a long time, such as Pyracantha, precious seeds, NanTianzhu, Holly, Ligustrum lucidum, Red Maple, Chicken claw pepper, etc.; after harvest, it should be treated in time and stored in sand to germinate, so as to sow in late March to early April. In the shed, but also to harvest asparagus, winter coral, palm bamboo, precious coconut, Clivia seeds, should be picked with sowing.

9. Inspection: this month should often check the sand stored seeds, such as magnolia, Michelia, Manglietia, heather, winter table, privet, osmanthus, to see if there is seed moldy, if found seed moldy, to timely wash seeds and replace wet sand re-storage; if the seed is dry, can give appropriate water spray humidification; if the seed has been cracked white, should be timely sown, and covered with plastic film insulation moisture. In addition, should also check the sand hidden in the indoor dahlia root tuber, beauty coke underground stem, to prevent mildew.

Management of potted flowers in garden

1. Watering: For some cold-resistant potted ornamental plants placed in the courtyard, such as pine and cypress, wax plum, plum blossom, crape myrtle, vitex negundo, peach, crabapple, etc., water once every half month around noon to keep the pot soil moist without freezing; For plum blossom, camellia, tea plum, daphne flower, begonia, Belgian rhododendron, etc. placed in the greenhouse, because their flower buds are in the expansion stage or the initial flowering stage, in addition to keeping the basin soil moist, they should also often absorb water for the branches to create a relatively moist small environment; For the foliage plants placed in the greenhouse, watering should be controlled, and the plants can be sprayed once a week around noon. The water temperature and the temperature of the greenhouse should be basically the same. The leaves of the plants should not stagnate at night, so as not to damage the roots and leaves.

2. Fertilization: Most potted flowers and trees in the courtyard of this month are still in dormant state, do not need topdressing, but some tall potted plants, if spring does not plan to change pots, can be in the pot around the soil to open a circular groove, buried a small amount of retting cake fertilizer powder or multi-element slow release compound fertilizer particles; For plum blossoms, peach blossoms, peony, camellia, tea plum, Belgian azalea, daphne, begonia, etc. placed in the shed, if the greenhouse temperature exceeds 10℃, can be irrigated with 0.3% potassium dihydrogen phosphate solution; Pineapple, Cymbidium hybridum, Cyclamen persicum, Cymbidium primrose, Melon, Hyacinth, Crab Claw Orchid, Calla Lily, Stagadia, etc. placed in the shed, as long as the temperature is not lower than 15℃, can continue to apply low concentration of potassium dihydrogen phosphate solution; placed in the greenhouse foliage plants, if the temperature is lower than 10℃, its root system is still dormant, should stop all forms of dressing.

3. Pruning: This month is the last month of winter. For potted ornamental plants placed in the courtyard and not yet pruned, we should seize the time to prune them; for potted plants that have been shaped for more than one year but have not yet been given a tie, we should first remove the tie, and re-tie the branches that have not been tied in place at different angles and positions, so as not to cause the branches to die due to too long binding time. For potted foliage plants placed in the shed, orange branches and yellow leaves on the plants should be cut off in time.

4. Cold-proof: For potted flowers placed in greenhouses, if there is a large cold wave going south, there will be a substantial cooling, and 1 to 2 far-infrared electric heating films can be added in the shed, which can increase the temperature of the shed by 2℃ to 3℃. For large tree stump potted plants placed in the courtyard, in particularly cold weather, the pot surface and surrounding can be covered with sawdust, straw, sacks, film and other insulation.

5. Disease and pest control: special attention should be paid to the prevention and control of aphids, scale insects and whiteflies for potted ornamental plants placed in greenhouses; ventilation should be paid to the greenhouses with higher humidity around noon to prevent large-scale gray mold, such as Rieger Begonia, Bulbous Begonia, Fusang, etc. For potted plants with diseases and insect pests last year, the dead leaves and weeds on the pot surface around them should be cleaned up and burned together; for some large piles with partially exposed xylem of trunk, stone sulfur mixture should be applied to the exposed parts to prevent pile trunk rot or insect infestation.

6. Soil preparation: In the first ten days of this month, we should seize the time to prepare culture soil. 5 parts of garden soil, 2 parts of rotten leaves, 1 part of river sand, 2 parts of sawdust or tobacco powder, 5% decomposed cake fertilizer and 3% multi-element compound fertilizer can be added. After mixing well, they should be covered with plastic film to prepare for changing pots or using pots in spring.

Balcony flower arrangements

Bonsai suitable for balcony display

The weather this month is cold, and it is not suitable for placing potted ornamental plants on the open balcony north of Huaihe River, unless it is some very cold-resistant, dry-resistant and cold-resistant species, such as Platycladus orientalis, Sabina chinensis, pomegranate, Ginkgo biloba, etc. The open balcony south of Huaihe River can display the plant species that have been adapted for a long time, have strong resistance and are quite cold-resistant, such as black pine, triangular maple, elm, finch plum, water bayberry, wax plum, plum blossom, spring jasmine, golden bell hanging silk euonymus, etc., but it should also prevent the basin soil from freezing. In the southern region, if the temperature on the balcony is not lower than 5℃, cycas, peach leaf coral, mahonia latifolia, budi coconut, palm bamboo, European dwarf palm, golden mountain palm, white ash, holly holly, crabapple, tie-stemmed crabapple, etc. can be displayed.

Balcony Floral Propagation

1. Sowing: in a closed balcony, culture soil is contained in a large flowerpot, cycas, palm bamboo, asparagus, clivia, podocarpus, bamboo cypress, osmanthus, Michelia, cinnabar root, ginkgo, etc. are sown, and seedlings can emerge in spring.

2. Cuttage: In a closed balcony, take a large flowerpot as a container, mix vermiculite or peat with 1/5 river sand as a cuttage substrate, implement fully enclosed moisture cuttage, maintain the temperature not lower than 5℃, and can cut fingered citron, hibiscus, gooseberry, rubber tree, five-color plum, geranium, jasmine, pearl orchid, peach leaf coral, longevity flower, Yushu, jade leaf, county flower, arrow lotus, etc.

Management of potted flowers on balcony

1. Watering: For those plants that bloom around the Spring Festival placed on the fully enclosed balcony, such as melon, primrose, longevity flower, camellia, tea plum, Belgian rhododendron, calendula, etc., fruit viewing plants such as firethorn, Tianzhu, Dai, fingered citron, kumquat, precious seeds, winter coral, etc., not only should the pot soil be kept moist, but also leaves, flower buds and fruits must be sprayed, so as to make their leaves green, flower buds expand rapidly and fruits colorful. Buy back the hybrid cymbidium, poinsettia, etc. cultivated in the greenhouse, because the temperature and humidity in the original environment are very different from those in the family, if you do not often spray water on the leaves, it will often lead to leaf shrinkage and dryness. For all kinds of wind pears, if the room temperature is lower than 10℃ to 15℃, not only watering should be controlled, but also too much water should not be injected into the leaf tube to prevent rotten heart. For potted ornamental plants that continue to be placed on balconies in southern areas, it is appropriate to keep the pot soil moist.

2. Fertilization: For potted ornamental plants placed in fully enclosed balconies, such as camellia, tea plum, Belgian rhododendron, daphne, clivia, plum blossom, cyclamen, calla lily, cymbidium, primrose, pineapple, caltrop flower, melon, Stagelina, primrose, hyacinth, tulip, etc., as long as the room temperature is not lower than 15℃, low-concentration potassium dihydrogen phosphate solution can be continuously applied. All forms of topdressing should be stopped for tree stump bonsai and potted foliage plants that have entered a dormant state.

3. Trim: For potted ornamental plants placed in fully enclosed balconies, the dead branches, yellow leaves and branches infected with diseases and insect pests should be cut off together and destroyed; for potted tree stumps placed on balconies, such as finch plum, elm, mosquito mother, triangle maple in the north, Fujian tea, murraya, fig tree, small stone, triangle plum, pepper wood, Qingxiang wood in the south, etc., we should seize the time to conduct a comprehensive pruning in place, so that their crown shape is beautiful and layered; For those plants that have been coiled for 2 years, the binding should be removed first. If the desired fixed effect has not been achieved, the angle and position can be changed again before coiling.

4. Cold-proof: According to the lower limit temperature that different ornamental plant species can endure, the potted plants placed on the balcony are determined, or moved into the general indoor cold, or placed in the air-conditioned indoor maintenance, or directly covered with double-layer plastic sheds on the balcony to prevent cold. The potted plants placed on the balcony in the southern region had better be covered and tied around the pot surface and flowerpot with sacks at night.

5. Disease and pest control: stump bonsai trunk and large branches of the exposed xylem, should be coated with sulfur mixture mildew and moth. For scale insects and whiteflies appearing on potted plants, they should be wiped off with damp cloth in time; for aphids appearing on potted plants, they can be killed by tobacco powder (silk) soaking water.