Best time to propagate: the best time to propagate osmanthus tree is in the spring.
Best growing soil: osmanthus tree is not strict on soil requirements, except alkaline soil, lowlands and too sticky poorly drained soil, generally can grow.
But deep, loose, fertile, well-drained slightly acidic sandy loam soil is more suitable.
Growth humidity requirements: the best relative humidity of osmanthus should be maintained above 85%.
Optimal growth temperature: the optimal growth temperature of osmanthus tree is 15~28℃.
Optimal growth light: Osmanthus fragrans generally requires six to eight hours of light per day, avoiding strong light or shade.
Precautions for breeding osmanthus tree: Spreading fertilizer: osmanthus tree is mainly organic fertilizer, when osmanthus spring germination, every 10 days or so, we should apply a fully rotted dilute cake fertilizer water or pig manure liquid, after July, the best composite organic fertilizer.
Early September to apply the last phosphorus-based liquid fertilizer, can promote the growth of osmanthus, conducive to the flowering of osmanthus.
Watering points: osmanthus tree watering should be dry and wet, do not stagnant water, so as not to rot the roots or make the leaves fall off. Especially at the time of flowering, the water should not be too much, so as not to cause bud drop, affecting the flowering.
Pruning essentials: the osmanthus tree is strong in sprouting, and has the characteristic of natural formation of thickets. It is twice a year in the spring and fall, such as not timely pruning wipe buds, it is difficult to cultivate a high plant, and easy to form the upper branches dense, the lower branches of the sparse on the strong and weak phenomenon. Pruning in addition to tree potential, branch potential growth should be short cut, generally to thinning-based, only too dense peripheral branches for appropriate thinning, and cut off the long branches and pest branches to improve plant ventilation and light conditions. Timely erase the trunk base issued by the budding tiller branches, so as not to consume the nutrients within the tree and disturb the shape of the tree.
Replacement of potting soil: Potted osmanthus trees must be replaced once a year in the spring before the buds while pruning too dense and senescent fibrous roots. Reproduction points: osmanthus tree reproduction methods are sowing, cuttings, grafting and pressing and so on. Cuttings and grafting are the most common methods of reproduction. Disease and Pest Control: There are few diseases and pests of osmanthus tree, mainly anthracnose, leaf spot disease, red spider and oyster shield mealybugs, etc. They can be prevented by Bordeaux wave, stone sulfide, desulfurization, metribuzin, dichlorvos, dicofol and other agents.
The above is the osmanthus tree breeding methods and precautions, people need to pay attention to the osmanthus watering should not cause stagnant water, otherwise it is easy to cause osmanthus roots black rot, leaf tip scorching, and even lead to the death of osmanthus in serious cases.