How to make oleander form a "trigeminal and nine tops" crown?
Oleander is a three-leaf whorl, which is a typical trigeminal branch, that is, three new branches are produced from the stem nodes after each pruning. People can make use of its branching feature to trim and reshape it to make it "trigeminal and nine tops".
When the trunk grows to a certain height, three main techniques can be produced from the trunk. When the main branch grows to more than 20cm, each branch will retain 20cm before topping to make it sprout new technology. There are 3 more branches on each main branch, 20 cm-30 cm in each branch, and all the upper branches are cut off.
After such pruning, the tree crown of "three forks and nine tops" is formed. If the branches are not pruned for many years, the branches grow very thin, the old leaves fall off, the lower part is empty, the flowers and leaves are concentrated on the very high top, the tree shape is very ugly, and the flowers are few and leaves are sparse, which affects the ornamental effect.
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Cold-resistant variety Hongguo privet
Ligustrum lucidum belongs to the genus of Oleaceae. Distributed in alpine areas of 1500 meters in Luoxiao Mountains, evergreen shrubs or small trees, 5-7 meters high, twigs and pedicels purplish red, leaves oval, 6-8 cm long, 3-4 cm wide, lavender red. Terminal panicle, 6-8 cm long. Fruit long oval, false berry drupe, a seed. The flowering period is May, the fruiting period is August, and the branches are full of red fruit, which does not fall until October. This variety has strong adaptability, fast growth, high germination rate, resistance to pruning and low temperature of minus 20-22 ℃.
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How to propagate oleander
Oleander blossoms from May to October, and the flowering period is as long as half a year, so it is also known as "half a year red". The main means of propagation of oleander are cutting and sowing 1) during cutting and pruning, the small lateral branches germinated from the trunk of oleander should be often cut off so as not to interfere with the shape of the tree and consume nutrition. Using these small lateral branches as propagation materials, it is easiest to survive after cutting. These branchlets are relatively short, although thin and weak, but the tissue is more substantial, with terminal buds at the same time, and form faster after rooting. Before cutting the above insertion
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