Method of propagation for Parthenocissus tricuspidata
This article introduces knowledge about the propagation of flowers, specifically the propagation methods for Parthenocissus tricuspidata. Please see the detailed introduction below.
Parthenocissus tricuspidata is adaptable, prefers shady and humid environments but is not afraid of strong sunlight, is cold-resistant, drought-resistant, and can grow in poor soil. It has a wide climatic adaptability and can maintain a semi-evergreen or evergreen state in warm temperate regions and southward in winter. It can be pruned, dislikes waterlogging, and is not strict about soil requirements. It grows robustly in either shady or sunny environments, but grows best in moist, fertile soil. It has strong resistance to harmful gases such as sulfur dioxide.
Two propagation methods are commonly used for Parthenocissus tricuspidata: cutting and layering.
Propagation by cuttings:
Cuttings can produce larger seedlings in a short period.
(1) Selection of cuttings: Tender cuttings are collected from June to July each year, choosing semi-lignified branches and cutting them into 10-15 cm long cuttings. The upper cut is about 1 cm away from the bud and cut flat, while the lower cut is about 0.5 cm away from the bud and cut diagonally. For hard cuttings, they are collected after defoliation and before the soil freezes each year, selecting dormant branches about 0.5 cm in diameter and 10-15 cm long, with the cutting method similar to that of tender cuttings.
(2) Cutting treatment: Before planting, the cuttings are pretreated with ABT 1 root powder solution. The concentration for tender cuttings is 50×10^-6, with a soaking time of 0.5 to 1 hour; the concentration for hard cuttings is 100×10^-6, with a soaking time of 1 to 2 hours. The soaking depth is 3 to 4 cm from the lower cut.
(3) Planting: River sand or a mixture of river sand and soil (soil/sand = 1:1) is used as the cutting substrate, which should be well-leveled. The treated cuttings are planted 3 to 4 cm deep into the substrate, compacted, and watered promptly to keep the substrate and cuttings moist. Roots can form within 20 to 25 days, and after rooting, they can be transplanted.
Propagation by layering:
Layering is a propagation method where the stem vines of Parthenocissus tricuspidata are pressed into the soil without separating from the mother plant, allowing roots to grow at the point where they are pressed into the soil, and then cutting to form several new independent plants. Before the roots form, all the water and nutrients required by the stem vines are provided by the mother plant. The advantages of this method are high survival rate, simple management, and vigorous growth of seedlings. The disadvantage is a relatively low propagation rate.
(1) Layering period: Layering can be done at any growth stage, but the best results are obtained in March to April when the sap begins to flow in Parthenocissus tricuspidata and in July to August after the branches mature. Layering at other times can still survive but roots grow slower.
(2) Layering method: For the vines that creep on the ground, except for a 40-60 cm exposed growth segment retained from the base, the rest can be buried in the prepared substrate. The substrate composition is high-quality manure: sawdust: topsoil at a ratio of 1:1:1 or 2:1:1. The coverage thickness of the substrate is usually 15-20 cm. After covering, water should be applied regularly to keep it moist for root and bud development.
(3) Cutting into seedlings: After 15-20 days of layering, new buds can grow from the buried nodes. When the new buds grow to 40-50 cm, the new roots have grown well. At this time, a small segment of soil is dug open 10-15 cm below the new buds, and the internode is cut to obtain a new seedling. The cut should be covered immediately to promote healing. After 3 to 4 days, the new seedling can be transplanted out of the nursery for planting or left in place to continue growing.
Transplanting or planting is done during the defoliation period. Before planting, organic fertilizers are applied as a base fertilizer, and overly long stems are pruned, watered sufficiently, and are easy to survive.
Is the detailed introduction to the propagation methods of Parthenocissus tricuspidata shared in this article clear to you?