How to Multiply Trees: Advanced Techniques and Methods

Tree propagation, the process of multiplying existing trees, is a vital skill for gardeners, orchardists, and horticulturists. This article delves into several methods, including air layering, grafting, and others, to equip you with diverse and effective techniques for multiplying trees.

1. Air Layering

air layering

Air layering is akin to taking cuttings but leaves the cutting attached to the parent plant until it roots. This method is suitable for various plants, including tropical houseplants and fruit trees like apple and citrus. The advantages of air layering include continuous moisture supply from the parent plant and the rapid production of large specimens. The best time for air layering is either in spring or mid-summer, using shoots from the previous year or the current year. The process involves making a slit in the stem, inserting a toothpick to hold it open, adding rooting hormone, and wrapping with damp sphagnum moss and plastic wrap. It generally takes one to three months for roots to appear before the new plant can be detached and potted.

2. Grafting Under the Bark (Bark Grafting)

grafting trees

Bark grafting is a relatively simple technique that does not require special tools. It is effective for branches from 1 inch to several inches in diameter. The process involves making slits in the bark and preparing the scion (the grafting material) with a long cut and a shorter cut for easy insertion. The scion is then inserted into the slits and secured, possibly with nails or tape, and the graft is protected with wax. This method is typically used for topworking established plants and changing cultivars in fruit orchards without planting new trees.

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