Sweet osmanthus can endure moderate cold, but can't bear the heat. In the south of the Yangtze River Basin, it can directly overwinter outside, but in East China, it needs to winter in the leeward and heat preservation environment.
The growth of plants can not be separated from the soil. Sweet osmanthus likes loose and fertile soil with good drainage, and can survive in mild saline alkali soil.
Sweet osmanthus is afraid of over watering and waterlogging, so it should be moved indoors or covered with film in rainy season. If there is too much water, it will grow badly.
Sweet osmanthus like a sunny and cool environment, so we should always accept the light, keep healthy growth, and pay attention to the permeability of the environment, timely ventilation.
After the weather warms up, the growth speed of Sweet osmanthus is accelerated, and the required nutrients are increased, so thin liquid fertilizer is applied every 15-20 days.
After flowering in early spring, it is necessary to apply 1-2 times of quick acting liquid fertilizer to supplement nutrients, so that it can bloom again in September and October.
If the Sweet osmanthus need to be transplanted, the host soil should be taken into consideration when transplanting, because the fibrous roots of Sweet osmanthus are relatively few and the host soil is needed to provide nutrients.
Although Sweet osmanthus likes sunshine, too strong sunshine in summer will be harmful to the growth of Sweet osmanthus, which may cause burning of leaves, so a certain amount of shade should be carried out in midsummer.
During the flowering period of Sweet osmanthus, watering should be controlled and fertilization should be stopped. In rainy season, waterlogging should be prevented and drainage should be carried out in time.
In order to increase the number of flowering, it is necessary to pick the heart of the new seedlings and promote the germination of the lateral buds. After flowering, in order to make the osmanthus fragrance bloom again, it is necessary to cut off the old branches and retain the new ones.
