How to propagate Parthenocissus tricuspidata by cutting
As a commonly used plant for vertical greening, Parthenocissus tricuspidata is popular for its strong climbing ability. However, many gardening beginners have many questions about propagation by cutting and winter protection. This article will systematically analyze the key points of cutting operations and strategies for cold winter protection.
Full Process Analysis of Parthenocissus Tricuspidata Cutting
Choosing the Right Time for Cutting
Select the best time based on the type of branch: woody branches should be cut in March to April when the temperature warms up, as the plant begins to sprout new buds; for tender branches, wait until summer (June-July) or early autumn (September), when the new branches are semi-woody and have both vitality and resistance.
Branch Processing Standards
Select the middle section of healthy parent plants, with woody branches 12-18 cm long retaining 3-4 buds, and tender branches 8-12 cm long retaining 2 true leaves. Use a pruning shear wiped with alcohol to make a 45-degree diagonal cut, then apply a mixture of myclobutanil and rooting powder to the cut surface, and let it sit for 20 minutes to form a protective film.
Matrix Configuration Points
It is recommended to use a mixed matrix of perlite: vermiculite: humus soil in a ratio of 1:1:3. Before use, it needs to undergo double disinfection: first, treat with 120°C high-temperature steam for 30 minutes, then spray with a 0.5% potassium permanganate solution after cooling. The cutting depth should be controlled at 5-8 cm, ensuring that at least one bud is buried in the soil.
Winter Cold Resistance Management Plan
Temperature Tolerance Threshold
Experimental data show that mature plants can survive for 7 days at -25°C with a survival rate of 92%, but cuttings from the same year show frost damage at -15°C. In northern regions, special attention should be paid to the protection of plants less than 3 years old when the temperature drops below -20°C, and emergency measures should be initiated.
Overwintering Protection Measures
A three-layer protection system is recommended: heap 30 cm of soil at the base, wrap with a hemp cloth insulation belt, and cover the outer layer with a windproof non-woven fabric. In extremely cold areas, temporary windbreaks can be constructed, and when using PE film, make sure to leave air vents.
By following scientific cutting operations and winter management, the survival rate of Parthenocissus tricuspidata can be increased to over 85%. It is recommended to regularly observe the plant's condition, remove protective facilities promptly after the spring warming, and apply phosphorus-potassium fertilizer to promote the germination of new buds.