Potted gardenias should be planted in late autumn, and there should be soil balls on the pots. Gardenia likes acidic soil, and the soil in the north is mostly neutral or alkaline, which is one of the main reasons for the yellowing of leaves. Therefore, fertile acid culture soil should be chosen to preserve gardenia. Generally, 5 parts of humus soil, 3 parts of garden soil and 2 parts of sandy soil can be prepared, and sulfur powder1~ 2g should be prepared for each kilogram of culture soil.
(2) Water
Gardenia likes humidity. Keep the soil moist during the growing period, and pay attention to increasing the air humidity. Water more when it is hot and dry in summer; In spring and summer, spray leaves with clear water every morning and evening, and sprinkle water on the ground around the basin to increase air humidity; Water less in winter, but spray the leaves frequently to keep them clean.
(3) Fertilization
Gardenia likes fertilizer. In addition to changing pots and applying organic fertilizer as base fertilizer, topdressing is still in the growing period in Qin Ying, so it is advisable to apply thin fertilizer frequently. Apply 1 times organic liquid fertilizer every 10 day in the growth period, and it is better to apply 10% ~ 15% cake fertilizer and water; After budding, apply quick-acting phosphate fertilizer 2 ~ 3 times, such as 0.5% calcium superphosphate. Fertilizer won't reach autumn. Fertilization after autumn, autumn branches grow fiercely and are easily frozen. Combined with fertilization and watering during the growth period, water 1.2% ferrous sulfate every 1.5 ~ 20 days to prevent the leaves from turning yellow.
(4) Lighting
Gardenia flowers are half cloudy and afraid of direct sunlight. The shading degree should be about 50%. If exposed to the sun, the leaves will turn yellow and white until they fall off, so they should be placed in the shade or scattered light in summer. Let it see the light in the morning and evening to avoid yellowing of the leaves. ?
(5) Pruning
Daily attention should be paid to pruning and shaping to form a certain crown shape. Generally, when pruning for 2 ~ 3 times in the growing season, the top should be cut off to promote the formation of hemispherical crown.
(6) in and out of the room
Gardenia is weak in cold tolerance, so we should pay attention to the appropriate time to go out and enter the room. Generally enter the room in the middle of 10, and put it in a sunny place after entering the room. The room temperature should be kept at 10 ~ 12℃, and the lowest temperature should not be lower than 0℃. It is not advisable to leave the house too early in spring, and it is best to leave the house in late April.
Extended data:
Medicinal value of Gardenia jasminoides Ellis
In traditional Chinese medicine, the fruit is called Gardenia, or Gardenia, Gardenia, Gardenia, Zhi Zi, Peony, Peach and Gardenia. Peach is cold in nature and bitter in taste, and has the function of clearing away heat and purging fire. It is mainly used to treat fever, red eyes, jaundice, hematemesis, epistaxis, heat toxic sores and other diseases.
On the chemical level, Gardenia contains unique chemicals, such as geniposide and geniposide, which can prevent the action of enzymes that inhibit insulin production, thus promoting the normal secretion of insulin and improving the condition of diabetes.
Gardenia is bitter, cold and non-toxic; Slight gas and slightly sour and bitter taste; Entering the heart, liver, lung and stomach meridians. Gardenia contains flavonoids such as geniposide, pectin, tannin and crocin. Roots, leaves and flowers can all be used as medicine, and have the functions of sedation, lowering blood pressure, inhibiting bacteria, stopping diarrhea, relieving pain, resisting inflammation, regulating smooth muscle, accelerating soft tissue healing, purging fire and relieving annoyance, diminishing inflammation and removing heat, clearing away heat and diuresis, cooling blood and detoxifying.
References:
Baidu encyclopedia-gardenia