2. Temperature: The optimum temperature for osmanthus fragrans growth is between 20-30℃, and it will not freeze at 0℃, but protective measures should be taken when it is lower than-10℃, and high air humidity is needed in high temperature season. When the outdoor temperature is about 8- 10℃ in spring, you can leave the room for maintenance to avoid the branches growing indoors in vain, which is not conducive to flowering.
3.
Water drainage: Osmanthus fragrans is mainly watered within one month after new planting and in the summer of the same year. The newly planted osmanthus must be watered, and it can be watered in time according to the weather and site conditions. conditioned response
The canopy of plants is sprayed with water to maintain a certain air humidity and reduce the evaporation of water from seedlings. In addition, in order to promote the early flowering of osmanthus fragrans, in mid-September, when the flower buds begin to germinate, appropriate amount of water should be used to keep the soil moist.
Osmanthus fragrans seedlings do not need a lot of watering during normal maintenance, but can be properly watered in particularly dry summer and autumn. Osmanthus fragrans is not tolerant to waterlogging, and poor drainage will cause a lot of fallen leaves, root rot and even death. Timely drainage or transplantation
A certain amount of sand planted on waterlogged plants can promote the growth of new roots.
4. Rational fertilization: fertilization should be based on the principle of thin fertilizer and diligent application, with quick-acting nitrogen fertilizer as the main fertilizer, and large and medium-sized seedlings should be fertilized three or four times a year. In early spring, before the buds begin to swell, the roots begin to move and absorb fertilizer. Therefore, in the early spring, in the tree tray,
Apply organic fertilizer internally to promote the growth of spring shoots. Spring shoots are branches that bloom in autumn that year. Spring seedlings are growing vigorously and will bloom more in the future. After osmanthus fragrans blooms in autumn, inorganic fertilizer or garbage should be applied in early winter in order to restore tree vigor and supplement nutrition.
Fat. In the meantime, fertilization can be applied once or twice according to the growth of osmanthus fragrans. The newly transplanted osmanthus fragrans has weak absorption capacity because of its damaged root system, so it is not appropriate to topdressing too early. The base fertilizer of the transplanting pit should be mixed with soil before covering it, and the root system should not be straight.
Contact with fertilizer to avoid damaging the root system and affecting the survival rate. Fertilizer must be applied where the roots can absorb it. Seedling roots are concentrated, and transplanting is easy to survive. Therefore, fertilization in nursery should not be too far away from seedling crown, otherwise the root system will expand outward.
Exhibition. But it is not suitable to be applied under the trunk, which is not conducive to the absorption of fertilizer.
5. Pruning: Pruning osmanthus fragrans is an important measure to cultivate single-dried osmanthus fragrans. Timely and reasonable pruning can make it ventilate and increase
Strong photosynthesis can reduce pests and diseases, and make osmanthus grow fast, with straight trunk and beautiful tree shape. 1. Peeling buds: When osmanthus fragrans germinates, the buds on the trunk and the base can also germinate, so it is necessary to peel off the useless buds on the lower part of the trunk in time to make it moist.
Concentrated nutrition promotes the development of upper branches and forms an ideal tree shape. (2) Branching and draining: To cultivate dried osmanthus fragrans, we should consciously cultivate the trunk straight from the seedling, maintain a certain branch height, and cut off useless branches.
The height of osmanthus fragrans branches is about 1.5 meters. (3) Short cutting: Cut off the top branches that are growing too vigorously to keep the height of osmanthus fragrans at about 3.5 meters and the crown width at 2.5-3 meters. When transplanting osmanthus fragrans, in order to maintain the complete tree shape, it is not appropriate to forcibly repair it.
Cutting is just cutting off dead branches, pests and diseases, sparse overlapping branches, cross branches and thin branches, and controlling long branches.
6. Smoke and dust prevention: Osmanthus fragrans is extremely afraid of smoke and dust, so the environment should be smoke-proof to prevent falling leaves and plant weakness.