Gardenia cultivation methods and precautions in the north

Culture method: gardenia should choose loose and fertile acid soil with good drainage and irrigation, or configure its own substrate, sufficient light should be needed during the growth period, proper shading in summer, and the growth temperature should be 16-18 ℃. Gardenia is suitable for growing in a humid environment, keep the soil moist during the growing period, improve air humidity, control watering in winter, and apply fertilizer every 15 days during the growing period. Matters needing attention: in winter in the north, it is necessary to keep warm and keep warm, prune timely, and prevent and control diseases and insect pests.

I. Culture methods

1. Select soil

The main results are as follows: (1) the suitable soil must be selected before planting gardenia, which is more beneficial to its growth.

(2) Gardenia jasminoides should be planted in loose and fertile acid soil with good drainage and irrigation conditions, and the soil PH value should be about 4-6. It can also be planted in the substrate, and the mixture of rotten leaf soil, garden soil and peat soil can be selected.

2. Reasonable lighting

The main results are as follows: (1) the growth of gardenia requires high light, and sufficient light is needed in the rapid growth period. if the light is not enough, it will easily lead to thinning of branches and leaves, delay of flowering or stop flowering.

(2) it is necessary to increase the time of light in spring and autumn, and in order to avoid withering branches and leaves caused by high temperature and strong light in summer, the plant can be moved indoors or shaded properly.

3. Growth temperature

The main results are as follows: (1) Gardenia jasminoides is suitable for growing in warm environment, and its normal growth will be affected if the temperature is too high or too low, and the suitable growth temperature is about 16-18 ℃.

(2) it should be planted in places with good indoor ventilation in summer and winter, and should be properly cooled under the condition of high temperature in summer and heat preservation in low temperature in winter.

4. Timely watering

The main results are as follows: (1) Gardenia jasminoides is suitable for growing in a humid environment, and there are certain requirements for soil moisture and air humidity.

(2) Gardenia jasminoides should be watered in time during the growing period, so as to ensure the growth. In order to improve the air humidity, water spray can be properly sprayed on the leaves or growth environment, and the amount of water should be controlled in winter. Excessive watering should not lead to rotting roots.

5. Rational fertilization

In order to promote the growth of branches and leaves, Gardenia jasminoides can be fertilized every 15 days.

II. Points for attention

1. Keep warm and keep cold: gardenia is planted in the north. After winter, gardenia must be kept warm in time to prevent frostbite. Plastic bags and foam can be used to protect the plant roots effectively.

2. Pruning: during the growth period, the branches and leaves are relatively easy to fold, which affects the light transmission and ventilation, and can be pruned properly, which is more conducive to its growth and promote branching. after the flowers are shedding, the residual branches are cut off in time to avoid nutrient loss.

3. Control diseases: the main pests are scale insects, stinging moths and whitefly, which can be controlled by insecticides. The main diseases are leaf spot and leaf yellowing. Leaf spot can be sprayed with 65% zinc wettable powder 600 times. Leaves are yellowed and can be fertilized in time.