The culture method of canna and the appreciation of canna pictures

Canna is a tropical broad-leaved plant, which is mainly yellow-flowered canna and safflower canna. In addition, the improved varieties also show purple, pink, complex spots and so on. As the banana blossoms in the scorching sun in the hot summer season, bring cool beauty to passers-by, it is not afraid of the brave spirit of poison is praised, the flower words as "a better future".

Canna: a tenacious fighter in full bloom in the heat

[plant archives]-

English name: big flower canna

Scientific name: Canna generalis

Aliases: canna, red banana

Family: Cannaceae of Banana family

Genus: Canna

Place of origin: native to India and South America, growing in an area of 800m above sea level, has been artificially introduced and cultivated.

Morphological features: perennial herbs, plant height up to 100 cm ~ 150 cm, rhizome hypertrophy with massive underground stem; leaves large, spirally arranged, with obvious midrib and pinnate parallel veins, petiole sheathlike clasping, no ligule, petiole round, green or purplish red; stems and leaves powdery, leaf broad oval. The flower is larger, up to 20 cm in size, with 4 petalized stamens, with milky white, yellow, orange, pink, bright red to purple.

1 the growth habits of canna-

Canna prefers warm, sunny, moist and cold-resistant soil, requiring deep, fertile and well-drained soil. The suitable growth temperature of canna is 22-25 ℃. It is necessary to take good heat preservation measures for planting in the north in winter, otherwise it is easy to suffer frost damage, resulting in the withering of leaves and flowers. In warm areas, canna can not sleep and grow all year round.

Banana sketch

Wild growth status of canna

2 the culture method of canna-

We take potted canna as an example to introduce its culture method.

First of all, seed selection, potted canna is suitable for choosing dwarf varieties, the size is relatively small, suitable for indoor culture. Pot soil is mixed with rotten leaf soil, garden soil, peat soil, mountain mud and other soil rich in organic matter, and applied bean cake, bone meal and other organic fertilizer as base fertilizer.

Secondly, separate planting, choose healthy rhizome to separate planting in March-April. Cut into several pieces according to the size of the rhizome, smooth the incision, and apply plant ash on the incision. When planting separately, the root blocks with 2 or 3 stem buds were buried in the basin soil, and the bud tips were left outside.

Finally, proper conservation should be carried out according to the seasons and the growth habits of canna. Water thoroughly for the first time after planting, and then keep the pot soil moist. When 5 leaves grow, apply liquid fertilizer every 10-15 days (rotten thin bean cake water and add an appropriate amount of ferrous sulfate, or compound fertilizer solution, with a concentration of about 0.3%). Stop fertilizing when flowering. Move the canna to the shade during flowering to prolong the flowering period. Cutting off the flowering stem after anthesis can promote its flowering again. In hot summer, the cool water temperature and the temperature above 40 ℃ will cause the leaf edge of canna to scorch and turn yellow.

Banana pot cultivation

canna

3. Disease and pest control of canna-

The main diseases of canna are mosaic disease and bud rot. Symptoms and prevention and treatment methods are shown in the table below.

In terms of insect pests, canna is less, so we should mainly pay attention to the leaf curl pests from May to August. The method of disinfestation is to spray with 50% dichlorvos 800 times or 50% prednisone EC 1000 times.

List of diseases of canna

Symptom

Prevention and control method one

Prevention and control method two

Mosaic disease

The leaves of the susceptible plants showed flower leaves or yellow-green spots, and the petals became smaller and formed variegated colors. When the disease was serious, the leaves became deformed, involuted and plaque necrotic.

Canna is propagated in separate roots, and the virus-free mother strain should be selected as the propagation material. Diseased plants were immediately removed and destroyed in order to reduce the source of infection.

Spray with 2000 times of 40% omethoate or 1000 times of 50% malathion, 20% diazinon and 70% aphid.

Bud rot

Before the leaf development and flowering of the banana, the bud rot bacteria invade through the stomata of the young leaves and flower buds. When spreading the leaves, there are many small spots on the leaves, which are connected to each other along the veins of the leaves to form large spots. The infected flower buds blacken and die before flowering.

Healthy rhizomes were selected as propagation materials, and the suspected bacteria-carrying rhizomes were soaked in 500-1000 times solution of streptomycin for 30 minutes before planting.

The plant was sprayed with Bordeaux solution (1) or 77% of the wettable powder 500 times, 14% ammonia copper solution 400 times, and so on.

Canna flower stamens

A budding canna

Conclusion: canna belongs to tropical plants, and the key point of conservation lies in the guarantee of wettability of potted soil and the maintenance of winter temperature. The broad leaves of canna can absorb harmful substances such as sulfur dioxide, hydrogen chloride, and carbon dioxide to purify the indoor air. And the leaves of canna are sensitive to air quality, so they are called harmful gas plant monitors. Not to mention its beautiful flowers!

The culture method of canna and the appreciation of canna pictures

Canna is a tropical broad-leaved plant, which is mainly yellow-flowered canna and safflower canna. In addition, the improved varieties also show purple, pink, complex spots and so on. As the banana blossoms in the scorching sun in the hot summer season, bring cool beauty to passers-by, it is not afraid of the brave spirit of poison is praised, the flower words as "a better future".

Canna: a tenacious fighter in full bloom in the heat

[plant archives]-

English name: big flower canna

Scientific name: Canna generalis

Aliases: canna, red banana

Family: Cannaceae of Banana family

Genus: Canna

Place of origin: native to India and South America, growing in an area of 800m above sea level, has been artificially introduced and cultivated.

Morphological features: perennial herbs, plant height up to 100 cm ~ 150 cm, rhizome hypertrophy with massive underground stem; leaves large, spirally arranged, with obvious midrib and pinnate parallel veins, petiole sheathlike clasping, no ligule, petiole round, green or purplish red; stems and leaves powdery, leaf broad oval. The flower is larger, up to 20 cm in size, with 4 petalized stamens, with milky white, yellow, orange, pink, bright red to purple.

1 the growth habits of canna-

Canna prefers warm, sunny, moist and cold-resistant soil, requiring deep, fertile and well-drained soil. The suitable growth temperature of canna is 22-25 ℃. It is necessary to take good heat preservation measures for planting in the north in winter, otherwise it is easy to suffer frost damage, resulting in the withering of leaves and flowers. In warm areas, canna can not sleep and grow all year round.

Banana sketch

Wild growth status of canna

2 the culture method of canna-

We take potted canna as an example to introduce its culture method.

First of all, seed selection, potted canna is suitable for choosing dwarf varieties, the size is relatively small, suitable for indoor culture. Pot soil is mixed with rotten leaf soil, garden soil, peat soil, mountain mud and other soil rich in organic matter, and applied bean cake, bone meal and other organic fertilizer as base fertilizer.

Secondly, separate planting, choose healthy rhizome to separate planting in March-April. Cut into several pieces according to the size of the rhizome, smooth the incision, and apply plant ash on the incision. When planting separately, the root blocks with 2 or 3 stem buds were buried in the basin soil, and the bud tips were left outside.

Finally, proper conservation should be carried out according to the seasons and the growth habits of canna. Water thoroughly for the first time after planting, and then keep the pot soil moist. When 5 leaves grow, apply liquid fertilizer every 10-15 days (rotten thin bean cake water and add an appropriate amount of ferrous sulfate, or compound fertilizer solution, with a concentration of about 0.3%). Stop fertilizing when flowering. Move the canna to the shade during flowering to prolong the flowering period. Cutting off the flowering stem after anthesis can promote its flowering again. In hot summer, the cool water temperature and the temperature above 40 ℃ will cause the leaf edge of canna to scorch and turn yellow.

Banana pot cultivation

canna

3. Disease and pest control of canna-

The main diseases of canna are mosaic disease and bud rot. Symptoms and prevention and treatment methods are shown in the table below.

In terms of insect pests, canna is less, so we should mainly pay attention to the leaf curl pests from May to August. The method of disinfestation is to spray with 50% dichlorvos 800 times or 50% prednisone EC 1000 times.

List of diseases of canna

Symptom

Prevention and control method one

Prevention and control method two

Mosaic disease

The leaves of the susceptible plants showed flower leaves or yellow-green spots, and the petals became smaller and formed variegated colors. When the disease was serious, the leaves became deformed, involuted and plaque necrotic.

Canna is propagated in separate roots, and the virus-free mother strain should be selected as the propagation material. Diseased plants were immediately removed and destroyed in order to reduce the source of infection.

Spray with 2000 times of 40% omethoate or 1000 times of 50% malathion, 20% diazinon and 70% aphid.

Bud rot

Before the leaf development and flowering of the banana, the bud rot bacteria invade through the stomata of the young leaves and flower buds. When spreading the leaves, there are many small spots on the leaves, which are connected to each other along the veins of the leaves to form large spots. The infected flower buds blacken and die before flowering.

Healthy rhizomes were selected as propagation materials, and the suspected bacteria-carrying rhizomes were soaked in 500-1000 times solution of streptomycin for 30 minutes before planting.

The plant was sprayed with Bordeaux solution (1) or 77% of the wettable powder 500 times, 14% ammonia copper solution 400 times, and so on.

Canna flower stamens

A budding canna

Conclusion: canna belongs to tropical plants, and the key point of conservation lies in the guarantee of wettability of potted soil and the maintenance of winter temperature. The broad leaves of canna can absorb harmful substances such as sulfur dioxide, hydrogen chloride, and carbon dioxide to purify the indoor air. And the leaves of canna are sensitive to air quality, so they are called harmful gas plant monitors. Not to mention its beautiful flowers!

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The cultivation method of Canna plantain in potted plants

Canna is a commonly used flowering plant in the subtropics and tropics, which likes warmth and plenty of sunshine, is not resistant to cold, has leaves like plantains, beautiful flowers, delicate appearance, and is known as the queen of flower beds. It can not only be planted on the ground, but also can be planted in pots. The following editor will introduce the methods of potted cultivation of canna!

Pot culture conditions of canna

1. Lighting: all-day sunshine, sufficient light is required during the growing period, and be sure to receive at least 5 hours of direct sunlight every day. The environment is too dark and lack of light, which will delay the flowering period. If you put it in a cool place during flowering, you can prolong the flowering period.

2. Temperature: the suitable growth temperature is 15-30 ℃. When it blossoms. In order to prolong the flowering period, it can be placed in a place with low temperature and no sunlight, and the ambient temperature should not be lower than 10 ℃. When the temperature is above 40 ℃, the canna can be moved to a cool and ventilated place. Before and after Frosts Descent, the potted canna can be moved to a temperature of 5-10 ℃ to survive the winter safely.

3. Humidity: during the growing period, water should be sprayed to the leaf surface 1-2 times a day to maintain humidity. Because the canna is very fond of fertilizer and moisture resistance, so the basin should be watered thoroughly.

4. Fertilization: in addition to applying sufficient base fertilizer before planting, topdressing should be applied 3-4 times a month in the peak growing season. If the buds are not produced 20-30 days before the scheduled flowering date, 0.2% potassium dihydrogen phosphate can be sprayed on the leaves to promote flowering. Potted canna sometimes has scorched and yellowed leaves, mainly due to excessive application of ferrous sulfate or drought and hot sun exposure. In the hot summer, if the water temperature is too cold, it will also cause scorch on the edge of the leaves. If the fertilizer is too thick in the heat of summer, it will burn the roots and make them "burn to death".

5. Soil: the requirement of soil is not strict, it grows best in loose, fertile and well-drained sandy soil, and it is also suitable for the growth of fertile clayey soil. The basin soil should be mixed with rotten leaf soil, garden soil, peat soil, mountain mud and other soil rich in organic matter. It is appropriate to choose dwarf varieties for potted canna, generally using rotten leaf soil, vegetable garden soil and rice chaff ash as raw materials, according to the ratio of 1: 1.5 and 0.5, and adding a small amount of bean cake, bone meal and other fertilizers. From March to April in spring, take out the tuber, remove the rotten part, select the stem with 2-3 strong buds and bury it in the basin soil, preferably the bud tip exposed the basin soil. Because canna is very fond of fertilizer and resistance to moisture, the basin should be watered thoroughly. When the fifth leaf grows, mature topdressing is applied every 7-10 days, and then watered after fertilization. Generally, 1% ferrous sulfate fertilizer and water is applied once a month, or a small amount of plant ash is added to make the stem straight and strong, the leaves green and thick, and the flowers bright. Stop fertilizing at the flowering stage. Stop fertilizing during the overwintering period.

6. Pruning: when the flower at the end of the stem lags behind, the stem branch should be cut off from the base at any time in order to sprout new buds and grow flower branches to blossom one after another.

Pot culture method of canna

1. The basin should be deep, large and loose: canna is a root plant, and the basin should be deeper and larger, and a tile basin with a diameter of 3040 cm can be used. It has strong adaptability and does not choose soil, so it grows best in fertile, loose and well-drained sandy loam. Rotten leaf soil and vegetable garden soil can be mixed with a small amount of sand as culture soil. When planting, it is appropriate to plant deeply and cover 68 cm of soil. Put a layer of broken hard plastic foam at the bottom of the basin to facilitate ventilation and drainage. Change the basin and soil every spring.

2. Moderate inflow and frequent fertilization: during the growing period of canna, the basin soil should be dry and wet, and waterlogging should be discharged at any time in the rainy season. The basin soil should be drier during the dormant period. Like fertilizer, in addition to adding some bone meal and nitrogen, phosphorus and potassium compound fertilizer to the culture soil during the growing period, apply nitrogen, phosphorus and potassium compound fertilizer once in the growing period, and do not apply it at flowering, continue to apply nitrogen fertilizer after flowering, avoid single application of nitrogen fertilizer, otherwise there are more leaves and less flowers. No fertilizer is applied during dormancy.

3. Like light, like warmth and fear cold: beauty steaming is a negative flower of tropical origin, which should be placed on a sunny courtyard, roof garden or west balcony with good ventilation and sunshine, so that not only the roots are big and tillers, but also the flowers are many and showy. If placed in shade, the plant will be tall, less color, light, or even no flowers. Fearing frost and snow freezing, Frosts Descent cut off all the scorched yellow leaves and buckled an empty flowerpot on the pot. the south of the Yangtze River can survive the winter safely outside, and people need rooms to survive the winter to the north of the Yangtze River. Prune the flower stem in time. For potted canna, the flower stem should be cut off from the lower part of the stem in time after flower fade, and fertilized to promote it to grow new stem from the stem root, and it can blossom again after one and a half months, so that it can blossom for 34 crops from late May to October, and always insist on beautiful flowers and leaves.

4. Ramet propagation is easy to survive: in spring, combined with changing the basin and soil, the root is poured out and cut into several pieces with a sharp knife, each with at least 23 buds. The incision is smeared with sulfur powder or charcoal and can be carried in the basin respectively. It can also be bred after anthesis and sowed and propagated in the next spring.

Prevention and control of diseases and insect pests of banana in pot cultivation

Attention should be paid to leaf curling pests from May to August every year so as not to damage their tender leaves and inflorescences. It can be sprayed with 1000 times of 50% dichlorvos or 50% EC of dichlorvos. When planting canna, tigers occasionally occur, which can be caught manually or poured into the root soil with 600-800 times solution of trichlorfon.

Well, this is the end of the method of pot culture of canna. Canna is not only of high ornamental value, but also its roots and flowers can be used as medicine. Root tubers can treat acute contaminated hepatitis such as xanthoma, hypertension and hemoptysis, and flowers can treat hemoptysis. It is a kind of medicinal and ornamental flower worthy of cultivation.