Generally, when the temperature is about 18 ℃, Camellia begins to shade its spring shoots. At this time, nitrogen fertilizer should be applied mainly to crush buds, about once every 10 days, until the spring shoots begin to Lignify. Or at the same time, the mixture of potassium dihydrogen phosphate, urea and rice vinegar was used for foliar spraying. In this way, after many times of root and leaf spraying, the spring shoots will grow very luxuriant, the leaves can be extended to the maximum extent, the branches and shoots can accumulate rich nutrients, creating a very good condition for flowering.
There will be a short period of semi dormancy after the spring shoots of Camellia are full and lignified. At this time, Camellia will turn into growth period, and flower bud will begin to differentiate. If we want to make Camellia bud more, we need to apply more phosphorus and potassium fertilizer, less or no nitrogen fertilizer. In this way, it can not only control the excessive length of branches, but also promote and shorten the time of flower bud differentiation, which will be more conducive to the formation of flower buds.
In the hot summer, the growth of camellia is slow, and most of them are in a half stop state. At this time, it is not suitable to apply fertilizer, especially concentrated fertilizer. If the soil is poor, the thin liquid fertilizer can be applied in combination with watering to improve the soil quality.
Autumn is a period of nutrition accumulation for Camellia plants. In order to survive the winter safely, we can apply the mixed fertilizer mainly composed of phosphorus and potassium every half a month, or spray it on the leaf surface, which can promote the plant to be strong and improve the cold resistance of Camellia.
In winter, Camellia entered a semi dormancy period, which did not need much fertilizer. When Camellia enters the room, its vegetative growth has entered a dormant state, but its reproductive growth has not stopped completely, so it should be combined with watering to apply a thin liquid fertilizer of phosphorus and potassium. (never apply concentrated fertilizer) to prepare for the next season's flowering.
