Maintenance Essentials of Rhododendron in Bud stage

Rhododendron bud maintenance, refers to after budding, most buds begin to grow up, to the blooming stage of this growth stage, generally about 90-120 days. But the length of this growing period has a lot to do with the temperature. The lower the temperature, the longer the date, and vice versa. If you want the cuckoo to blossom at that time, it is particularly important to raise buds. Here is a brief introduction to the main techniques of bud cultivation as follows:

First, the temperature is suitable

Rhododendron is particularly sensitive to temperature during bud rearing period, so it is most suitable to keep flowerpots in medium-temperature greenhouse. The night temperature should be 10 ℃ ~ 15 ℃, and the day temperature should be 18 ℃ ~ 25 ℃. If the flowering time is a little higher, the day temperature should be 25 ℃ ~ 30 ℃ and the night temperature should be 15 ℃ ~ 18 ℃. After flowering, the temperature should be lower, day temperature 10 ℃ ~ 15 ℃, night temperature 5 ℃ ~ 10 ℃. In order to ensure the same flowering period, plants with different degrees of bud development should be maintained under different temperatures, and the temperature of the maintenance environment should remain stable, and the temperature of the maintenance environment should not change sharply, especially be careful not to let cold air attack plants, so as to affect the growth and flowering of buds.

Second, proper shading

Cuckoos should pay attention to the maintenance of half-shaded places in the bud stage, and should not be exposed to direct sunlight in the sunny place, especially in the bud expansion period. The light can be properly enhanced in the early stage of new budding. The purpose of shading is an effective way to delay flowering and prolong flowering, but rare light will make the flower color dim, not bright enough, and should be moderate.

Third, maintain humidity

Bud period should pay attention to maintain a certain humidity, it is best to reach about 70%, the ground should be sprinkled to humidify, if necessary, conditions can be used to wet the mouth is the best. Watering can depend on the dry humidity of the basin soil. Small pots can be watered once every 2-3 days, while large pots can be watered once every 4-6 days. Watering should be poured into the basin soil, not from the canopy down. If the water temperature is about 25 ℃, you can use cold water mixed with warm water, but the water temperature should not exceed 35 ℃. Spray foliar water to moisturize the foliar surface, to observe more to prevent the foliar alkali, if found that there is alkali, to wipe off immediately. If the plant is short of water and the branches and leaves wilt due to drought, less water should be sprayed at this time, and less water should be watered in the basin at the same time. After the leaves stand up, one less water should be irrigated, and at the same time, water should be sprayed once to allow it to recover slowly. After the third rewatering and spraying, it can recover completely in 2-3 days. Never pour water all at once, or you will die.

Pay attention to ventilation

If the weather is warm and the temperature is particularly high on a sunny day, you can open the doors and windows for ventilation and keep the indoor air fresh and hygienic. But in the afternoon, or once the wind blows, it is necessary to close the doors and windows to prevent dust from contaminating the leaves and preventing plants from freezing.

Fifth, ask for phosphorus and potassium

After the rhododendron budding, what is most needed is phosphorus and potassium fertilizer, which should be applied 2 times and 3 times, and 0.2% potassium dihydrogen phosphate should be sprayed on the leaves (once a week), the flowers will be big and colorful, and the fragrance will be stronger. After the flower buds show color, you can stop all fertilizers, but be careful not to use fertilizers with irritating odors as far as possible.

VI. Disease prevention and pest control

There are few diseases and insect pests in the flowering period of rhododendron, and fungicides can be sprayed every 7 to 10 days to prevent the occurrence of diseases and insect pests.

In order to reduce the consumption of nutrients, several flowers that bloom early can be removed to make them bloom at the same time.

After entering the flowering period, it is necessary to reduce the room temperature, light and air humidity, so as to prolong the flowering period and increase the viewing time.