How to propagate Japanese wisteria? Propagation methods and precautions

Japanese wisteria (detailed introduction) is a large deciduous climbing plant native to Japan. Its stem bark, flowers and seeds can be used as medicine, and it can also be used to extract aromatic oil, giving it very high economic value. Artificial propagation of Japanese wisteria can be done by sowing, cuttings, layering, division, grafting and other methods, but sowing and cuttings are generally used more often.

Japanese wisteria

I. Propagation by cuttings

Cuttings propagation generally uses hardwood cuttings. In mid-to-late March, before the branches sprout, select robust 1-2 year old branches, cut them into cuttings about 15cm long, and insert them into a prepared seedbed, with the insertion depth being 2/3 of the cutting length. Spray water after inserting, strengthen care, and keep the seedbed moist. The survival rate is very high, and the plant height can reach 20-50cm in the same year, and they can be released from the nursery after two years.

Root cuttings make use of the fact that Japanese wisteria roots easily produce adventitious buds. In mid-to-late March, dig out roots 0.5-2.0cm thick, cut them into cuttings 10-12cm long, and insert them into the seedbed, keeping the insertion depth so that the upper cut end of the cutting is level with the ground. Other management measures are the same as for branch cuttings.

II. Propagation by sowing

Propagation by sowing is carried out in March. Collect seeds in November, remove the pod skin, dry them in the sun, bag them and store them. Before sowing, soak the seeds in hot water. When the boiling water temperature drops to about 30°C, remove the seeds and rinse them briefly in cold water, then keep them moist and pile them for a day and night before sowing. Alternatively, store the seeds in wet sand and soak them in clear water for 1-2 days before sowing.

Layering, division and grafting are all carried out in mid-to-late March.

How to grow Japanese wisteria: main value of Japanese wisteria

Japanese wisteria is a large deciduous climbing plant, and the inflorescence length and petal shape both vary greatly. Next, Xiao Qi will share the growing methods for Japanese wisteria and its main value. Let's take a look together.

I. How to grow Japanese wisteria

1. Light and temperature: Wisteria likes sunlight and is slightly shade-tolerant. Because wisteria is a large climbing plant, in order to make it grow well, a certain trellis is generally set up for cultivation. Wisteria also has relatively shorter species and cultivars that can be used as potted plants or made into bonsai.

2. Watering and fertilizing: Wisteria's main root is very deep, so it has strong drought tolerance, but it likes moist soil. However, the roots must not be soaked in water, otherwise they will rot. Applying compound fertilizer 2-3 times a year to wisteria can basically meet its needs.

3. Planting location: Wisteria has a long main root, so the planting site needs deep soil. Wisteria tolerates poor soil, but fertile soil is more favorable for growth. Wisteria also has strong adaptability to soil pH. In addition to the sunny and deep-soil requirements mentioned above, the planting site for wisteria also needs to be able to shelter from wind.

4. Pruning: Pruning should be done during the dormant period. When pruning, you can make the branch distribution uniform by removing dense growth and keeping sparse growth and by artificial guiding. In order to promote abundant flowers and lush leaves, reasonable pruning should also be carried out according to its growth habits. Because Japanese wisteria has strong branching ability, flower buds are borne in the leaf axils at the base of one-year-old branches, and the tips of growing branches tend to dry up, the new branches of the current year should be cut back, removing 1/3~1/2, and thin weak branches and dead branches should be cut off flush with the base of the branch.

II. Main value of Japanese wisteria

Japanese wisteria uses stem bark, flowers and seeds as medicine. Japanese wisteria flowers can be used to extract aromatic oil and can also detoxify and stop vomiting and diarrhea. Japanese wisteria seeds are slightly toxic and contain cyanide. They can treat muscle and bone pain and can also prevent wine from spoiling. Japanese wisteria bark can kill insects and relieve pain, and can treat wind-type arthralgia and pinworm disease, etc.

Nature and flavor: sweet, bitter, warm. Slightly toxic. Its toxicity lies in the pods, seeds and stem bark being toxic. If people eat the pods and seeds, vomiting, abdominal pain, diarrhea and even dehydration occur. Children eating two seeds can cause severe poisoning.

Functions and indications: relieve pain, kill insects. Used for abdominal pain and pinworm disease. Usage and dosage: 5 grams. (From "Supplement to the Compendium of Materia Medica" and "Supplements to the Compendium of Materia Medica").

The above isHow to grow Japanese wisteriaand an introduction to the main value of Japanese wisteria. Japanese wisteria has excellent economic, medicinal and ornamental value. We hope it is helpful to everyone.

Complete collection of Japanese wisteria propagation methods: prevention and control of common Japanese wisteria diseases

"How to grow Japanese wisteria"has already been shared with everyone. Next, what will be shared is also something everyone pays more attention to: Japanese wisteria propagation methods and disease prevention and control methods. Let's learn about them together.

I. Japanese wisteria propagation methods

Wisteria is easy to propagate and can be propagated by sowing, cuttings, layering, division, grafting and other methods, mainly by sowing and cuttings, but because seedling cultivation takes a long time, cuttings are the most widely used.

1. Cuttings: Cuttings propagation generally uses hardwood cuttings. In mid-to-late March, before the branches sprout, select robust 1~2 year old branches, cut them into cuttings about 15cm long, and insert them into a prepared seedbed, with the insertion depth being 2/3 of the cutting length. Spray water after inserting, strengthen care, and keep the seedbed moist. The survival rate is very high, and the plant height can reach 20~50cm in the same year, and they can be released from the nursery after two years.

2. Sowing: Propagation by sowing is carried out in March. Before sowing, soak the seeds in hot water. When the boiling water temperature drops to about 30°C, remove the seeds and rinse them briefly in cold water, then keep them moist and pile them for a day and night before sowing. Alternatively, store the seeds in wet sand and soak them in clear water for 1~2 days before sowing. Layering, division and grafting are all carried out in mid-to-late March.

3. Layering: After leaf fall, take two-year-old branches, peel off part of the bark, and press them into the soil.

4. Division: Cut off the small young plants growing from the root crown and transplant them in winter or spring.

5. Grafting: Graft one- or two-year-old branches at the root, and move them out after they survive.

II. Japanese wisteria disease prevention and control

1. Soft rot: When it occurs, it can cause the whole plant to die.

Prevention and control method: 50% carbendazim 1000-fold solution or 50% thiophanate-methyl soluble wettable powder 800-fold solution can be used for prevention and control.

2. Leaf spot: Also called black spot or brown spot. When leaf spot occurs, it harms wisteria leaves. Black spots first appear in the leaves, and then they gradually turn yellow and fall off. The occurrence condition of this disease is caused by a hot and humid environment.

Prevention and control method: Its environmental conditions should also be changed as soon as possible, and diseased leaves should be removed promptly at the initial stage of the disease. Spray 1% Bordeaux mixture 4~5 times, once every 7 days, to control the damage. 50% carbendazim 1000-fold solution can also be used for prevention and control.

3. Wisteria vein mosaic disease: The lateral veins of the leaves of wisteria and Japanese wisteria turn yellow or become clear-veined, gradually expanding into radial lesions or mottling. Sometimes the main vein turns yellow, followed by star-shaped markings or ring patterns. In severe cases, the leaves are deformed. The initial infection source is diseased wisteria. It is transmitted non-persistently by green peach aphids and bean aphids.

Prevention and control measures: Strictly select propagation materials. Use insecticides to control aphids.

The above isJapanese wisteria propagation methodsand an introduction to Japanese wisteria disease prevention and control methods. We hope it is helpful to everyone in propagating and caring for Japanese wisteria. If you want to learn more about Japanese wisteria, keep following us.