How to cultivate hollyhock? Detailed cultivation and care tips
The hollyhock is characterized by its unique flower form and excellent ornamental value; its tender leaves and flowers are edible and have the effect of clearing heat and detoxifying, combining ornamental and medicinal value in one. Below are detailed cultivation and care tips for it, which those interested can refer to.
The hollyhock's flower colors are vivid and beautiful. It is now cultivated all over the world, and is especially suitable for courtyards, hedgerows, flower walls, public flowerbeds, lawns and other places for row or clump planting, with a splendid display during the flowering period. Of course, this flower also has dwarf varieties that can be grown as potted plants, but it is not suitable for being kept indoors for long periods; placing it in front of the door or in the courtyard is best. Flower lovers can also cut it for cut flowers, for use in vases, bouquets, and so on.
Growing environment
The hollyhock prefers sunny, cool climates; it is cold-tolerant but not tolerant of frost, tolerates partial shade, and dislikes intense heat. In North China it can overwinter safely in the open ground. It grows well in loose, fertile, well-drained sandy soil rich in organic matter, and is afraid of waterlogged soil.
Propagation methods
The hollyhock is generally propagated by seed; autumn sowing in the south, and spring sowing in pots in the north is best. Under normal suitable temperatures, seeds sprout in about a week, and can flower the same year. When the seedlings grow 2 to 3 true leaves, they can be transplanted; it is best to set up stakes to prevent lodging. Of course, this flower can also be propagated by division and cuttings in spring and autumn.
Water and fertilizer management
When transplanting hollyhocks, keep the row spacing and water thoroughly to settle them in. During the growing period, weed and loosen the soil regularly, apply a phosphorus-potassium fertilizer each month, keep watering sufficient to maintain moisture, and take care to drain promptly in the rainy season so the soil does not become waterlogged. During the flowering period, add phosphorus-potassium fertilizer to promote more and more vivid flowers. After the flowers fade, promptly cut off the above-ground parts, and new shoots can still sprout.
Sunlight
The hollyhock loves light; for ground planting, choose a spot with ample sunlight. Potted hollyhocks should not be kept indoors for long periods, as they will grow poorly. But the hollyhock fears intense heat, so in summer be sure to sprinkle water frequently to lower the temperature; for potted plants, shade them at noon. When growing hollyhocks, maintain a well-ventilated environment.
Disease control
During the hollyhock's growing period, when the environment is too humid and the stems and branches are too dense, it is prone to disease. Take care to prevent this, keep the plants well ventilated and exposed to light, and promptly cut off diseased and dead branches when found.
The hollyhock's planting method is simple; you only need to pay attention to water and fertilizer management and pest and disease control. The above are detailed cultivation methods, so be sure to save them.
Cultivation methods and planting techniques of the Chinese medicinal herb hollyhock
The hollyhock is also known as yizhanghong, dashuji, rongkui, wukui, doupeng flower, and so on. It is a biennial upright herbaceous plant of the genus Alcea in the mallow family, native to Sichuan, China, and now widely distributed in China. Its tender leaves and flowers are edible, its bark yields high-quality fiber, and the whole plant is used as medicine, with effects of clearing heat and detoxifying, relieving cough, and promoting urination. The root can be used as an emollient. It has relatively high cultivation value. Let us take a look at the hollyhock's planting methods together below!
The hollyhock's growing habits
The hollyhock is widely distributed in China, found in East China, Central China, North China, and South China, and widely cultivated around the world. It prefers ample sunlight and tolerates partial shade, but dislikes waterlogging. It has strong salt-alkali tolerance and can still grow in soil containing 0.6% salt. It is cold-tolerant and can overwinter safely in the open ground in North China. It grows well in loose, fertile, well-drained sandy soil rich in organic matter.
The hollyhock's propagation methods
1. Sowing: In North China, sowing generally results in flowering the same year. Seeds germinate after about a week, and when 2 to 3 true leaves have grown, transplant once.
2. Division: Hollyhock division propagation can be carried out in August to September. Dig up the old plant, divide the stem buds with fibrous roots for replanting, water thoroughly immediately after planting, and it can flower the following year.
3. Cuttings: For hollyhock cuttings in spring, it is best to use stem sections from basal shoots as cuttings. The cuttings should be 7 to 8 cm long, with sandy soil as the medium; after cutting, shade them until they root.
The hollyhock's planting methods
1. Watering: When hollyhock seedlings have grown 2 to 3 true leaves, they should be transplanted once, with increased plant and row spacing, and watered promptly after transplanting. During the flowering period, water appropriately to encourage a long flowering period and good blooms, continuing all the way to the top of the stems.
2. Fertilizing: During the seedling growth period of hollyhocks, pay attention to fertilizing, weeding, and loosening the soil so the plants grow robustly. After flower buds form in the leaf axils, apply additional phosphorus and potassium fertilizer, and trim off a few of the basal leaves.
3. Root pruning: When planting hollyhocks, to keep the plants low and prevent lodging, in June you can use a spade to cut the roots in a conical shape around the plant, pruning the roots once every 2 to 3 weeks, then water immediately for maintenance.
4. Harvesting: When hollyhock fruits turn yellow and ripe, harvest immediately to prevent the seeds from scattering. After the flowering period ends, the above-ground part of the plant can be cut off; once new shoots sprout, a clumping plant can form. Hollyhocks age easily, so they should be renewed after 2 to 3 years of cultivation.
Hollyhock pest and disease control
1. Hollyhock rust
[Damage] Perennial old hollyhock plants are prone to hollyhock rust. Infected plants' leaves turn yellow or die, and brown, powdery spore masses can be seen on the undersides of the leaves.
[Control] Spraying Bordeaux mixture on the plants in spring or summer, or disinfecting the seeds before sowing, can achieve control effects. In the early stage of the disease, spray 15% triadimefon wettable powder at 1000 times dilution, or 70% thiophanate-methyl wettable powder at 1000 to 1500 times dilution, or 75% chlorothalonil wettable powder at 600 times dilution, etc., once every 7 to 10 days, for 2 to 3 consecutive sprays, all with good control effects.
2. Red spider mite
[Damage] During the growing period, hollyhocks are harmed by red spider mites.
[Control] When the infestation is severe, spray evenly with 1.8% abamectin emulsifiable concentrate at 7000 to 9000 times dilution, or use 15% pyridaben emulsifiable concentrate at 2500 to 3000 times dilution, both with relatively good control effects. Do not use dichlorvos to kill mites; dichlorvos has the effect of stimulating mite proliferation. Do not use pyrethroid pesticides; they are basically ineffective against mites.
3. Cotton leaf roller
[Damage] Hollyhocks are sometimes also harmed by the cotton leaf roller, which damages hollyhock leaves.
[Control] When it occurs, spray Bt wettable powder with a content of 16000 IU/mg at 500 to 700 times dilution, or 25% diflubenzuron suspension concentrate at 1500 to 2000 times dilution, or 20% miman suspension concentrate at 1500 to 2000 times dilution, etc.
4. White spot disease
[Damage] Hollyhock white spot disease mainly harms hollyhock leaves. In the early stage of the disease, small brown spots appear on the leaf surface. As the disease develops, the spots gradually expand into round, oval, or irregular shapes, with grayish-white centers and reddish-brown outer edges. In humid environments, a grayish-brown mold layer can appear on the spots.
[Control] Remove diseased leaves promptly, pay attention to the density of stems and branches, and keep the plants well ventilated and exposed to light. Increase the application of phosphorus and potassium fertilizer, and apply little or no nitrogen fertilizer. In the early stage of the disease, spray 75% chlorothalonil wettable granules at 800 times dilution, or 50% carbendazim wettable granules at 500 times dilution, or 70% thiophanate-methyl wettable granules at 1200 times dilution for control, once every 10 days, for 3 to 4 consecutive sprays to effectively bring the disease under control.
How to grow Abelmoschus manihot: essential tips for caring for Abelmoschus manihot
Abelmoschus manihot has soft flower colors and relatively large blooms, making it one of the more distinctive flower varieties. In the home, it is generally planted in courtyards or grown in pots placed on windowsills and other places. Let us look below at how to grow Abelmoschus manihot:
Basic information on Abelmoschus manihot:
Abelmoschus manihot (Abelmoschus manihot L.Medic.), also called okra, leopard's eye flower, batian umbrella, cotton wormwood, etc., is an annual or perennial robust upright herbaceous plant of the genus Abelmoschus in the mallow family. The plant is 1 to 2 m tall, the stems are covered with yellow bristles, and the leaves are large, ovate to nearly round. The flowering period is June to August. Its roots, leaves, flowers, and seeds are used as medicine, and it can be used to clear heat and detoxify, moisten dryness, and relax the bowels.
How to grow Abelmoschus manihot:
1. Soil:Abelmoschus manihot fears waterlogging; use well-drained, loose, fertile soil.
2. Watering:Abelmoschus manihot has certain water requirements. Pay attention to watering normally to keep the soil moist, but do not water too much.
3. Temperature:The growing temperature for Abelmoschus manihot is 25 to 30°C. The most suitable temperature during the flowering period is 26 to 28°C. A monthly average temperature below 17°C affects flowering, and nighttime temperatures below 14°C cause poor growth.
4. Fertilizing:Abelmoschus manihot should be given additional applications of decomposed human and animal manure, with farmyard manure being the best fertilizer. Fertilize according to the seedlings' condition; chemical fertilizer should not be placed too close to the planting holes, apply it deeply, and be careful to use a compound fertilizer balanced in nitrogen, phosphorus, and potassium. In the middle of the flowering period, apply another high-phosphorus, high-potassium fertilizer so it forms more buds and blooms more.
5. Pests:Abelmoschus manihot is cultivated extensively and rarely suffers from pests and diseases, but to prevent residual pathogens in the field, fungicides such as carbendazim or thiophanate-methyl can be used for control.
Abelmoschus manihot is a relatively special plant, with relatively many flowers, quite ornamental when in bloom, and also of high medicinal value. It is relatively suitable to choose to plant it in home courtyards.