1. Cause

(1) Improper curing conditions

Gardenia mostly grows in the south. The soil in the south is generally acidic, so Gardenia likes acidic soil. When Gardenia moves to the north where the soil acidity is not high, the soil conditions can not create a suitable growth environment for gardenia, so the growth trend will weaken. Moreover, the south is rainy, the air humidity is high, and the air in the north is dry, which can not provide sufficient water vapor for it, so the maintenance of gardenia is not good

(2) Water quality

Many people choose to water plants directly with tap water. In fact, this is the direct reason why they can't raise them well. The nature of tap water belongs to hard water, in which there are many fluorochlorine compounds and calcium magnesium compounds. If it is directly used to water flowers, it will gradually deposit lime in the soil. After a long time, the basin soil will be alkaline, which creates the alkaline soil environment most taboo for gardenia, resulting in its growth at a disadvantage

2. Solutions

(1) The soil for cultivating it should be carefully selected. It is best to use slightly acidic sandy soil, 70% red soil and 30% rotten leaf. For the control of acidity, the pH of the soil should be within 4.0 to 6.5, and ferrous sulfate can be used every three weeks to improve the acidity

(2) Before watering Gardenia with water, you need to put tap water in the sun for 2 to 3 days, and then use it after chlorine and other substances volatilize, or directly use rainwater to water the flowers. In addition, to properly increase the humidity of the air, spray 2 or 3 times a day to the leaves, which can help plants cool down and increase humidity. p>