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Cultivation of Red Leaf Barberry
Release time:
2024-07-17 09:14
Source:
Red leaf barberry is a deciduous shrub of the Berberidaceae family and Berberis genus, a variety of barberry. It prefers sunlight, is somewhat shade-tolerant, cold-resistant, drought-resistant, and can withstand pruning. The branches are reddish-brown, and the leaves are oval, either solitary or clustered, remaining red throughout the year. Flowers bloom from May to June, yellowish-white, and the fruit turns bright red and beautiful when ripe. It can be used to decorate flower beds and flower mirrors, and is an important tree species for color block combinations in landscape greening.
The propagation of red leaf barberry is mainly done through methods such as sowing, cutting, and layering.
1. Sowing
After harvesting the mature fruits in autumn, store them in sand. In April of the following year, sow them on a disinfected, loose, and fertile seedbed, covering with 2 to 3 centimeters of soil and watering thoroughly. Keep the seedbed moist but not waterlogged. When the seedlings reach a height of 3 to 5 centimeters, apply a 5% full-element liquid fertilizer once a week, and transplant them to the field in the following spring with a spacing of 5x10 centimeters.
2. Layering
In May, ring strip the lower branches of the red leaf barberry every 15 centimeters, about 0.5 to 1 centimeter wide, down to the wood. Apply a 10% solution of naphthylacetic acid to the ringed area, then bury the branches in the soil. Ensure that a small branch group is exposed to facilitate photosynthesis. Keep the soil moist, and roots can form in about 2 months. After autumn, the offspring can be cut from the mother plant and transplanted.
3. Cutting
Cutting is an important method for propagating red leaf barberry. Use wooden boxes or larger pots less frequently for cuttings, and mostly use seedbeds. The cutting bed should be located in a high, dry area without water accumulation, and the cutting medium should be loose, fertile, and well-aerated. Generally, the cutting bed is 1 meter wide and 4 to 5 meters long, surrounded by bricks 50 centimeters high, with drainage holes left around. The bottom should be filled with 10 centimeters of gravel, topped with natural composted leaf soil from broadleaf or coniferous trees. The medium should be disinfected with 50% carbendazim powder, applying 5 grams of the agent per 100 kilograms of soil. After mixing, cover with plastic film for 3 to 5 days to effectively kill various pathogenic microorganisms in the soil.
4. From April to September, cut 1 to 2-year-old or current year's semi-woody branches into 12 to 15 centimeters each, making the cut at an angle and leaving 1 to 3 leaves. Soak the lower part of the cuttings in a 1/1000 potassium permanganate solution for 24 hours, which can disinfect and promote rooting. Use bamboo sticks to make holes and insert the cuttings vertically into the seedbed, watering thoroughly. After inserting, promptly set up a plastic film shed and cover with a shading net of 80% to 40% (gradually changing to a higher light transmission shading net as the cuttings root). Based on the dry-wet thermometer index, water and shield against wind in a timely manner, ensuring the relative humidity is above 80% and the temperature is around 25°C. Such environmental conditions can achieve a survival rate of over 90% for the cuttings.
5. Shaping
When red leaf barberry is potted or planted in the ground, it is usually pruned into a highly ornamental barberry ball. However, due to its characteristics of producing many upright branches, being tolerant of pruning, and having strong branching ability, the branch retention method can be used to cultivate a graceful tree posture, while promptly removing messy branches and useless shoots to create a forest-style bonsai or a landscape bonsai.
6. Leaf Picking
Red leaf barberry is a great ornamental plant. Before the end of August, remove old leaves, applying a nitrogen-based liquid fertilizer once before and after leaf removal, while also spraying 0.1% urea. New leaves will grow in about 20 days, with bright red color and a green halo, very striking. When placed indoors in winter, it can be appreciated until mid-December.
7. Fertilization and Water Management
After transplanting seedlings, ensure there is sufficient fertilizer and water for their growth. With adequate composted base fertilizer, apply liquid fertilizer every 20 days, and spray 0.3% potassium dihydrogen phosphate weekly during the flowering and fruiting period. A small amount of insecticide, fungicide, and chemical fertilizer can be added to the irrigation water to eliminate pests and prevent diseases while providing sufficient nutrients for plant growth.
8. Pest and Disease Control
Red leaf barberry has few pests and diseases, but if aphids or scale insects occur, a solution made from cigarette butts diluted with 10 times water can be sprayed, achieving over 90% effectiveness. For boring pests, promptly cut off infested branches and burn them, or inject DDVP, then seal with cotton, achieving 100% effectiveness.
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