Gardenia likes acidic soil, the suitable pH value is 5 to 6, and the suitable soil should be prepared before planting. If the pH of the soil is not suitable, the subsequent maintenance is very troublesome.
For cultivation, humus soil, peat soil and half garden soil are usually selected, instead of cinder, or special soil for gardenia is directly purchased, which is convenient and practical.
Second, fertilization
Gardenia likes fertilizer, and when it is planted, decomposed cake fertilizer is added to the soil as base fertilizer.
In the growing season, cake fertilizer and ferrous sulfate retting are used to make fertilizer water, which is watered once a week. You can also use full-nutrient organic liquid fertilizer.
Topdressing 1~2 times in bud stage and watering with potassium dihydrogen phosphate aqueous solution can make the flowers plump and fragrant.
When the temperature is above 35℃ in summer and above 15℃ in autumn, stop fertilization.
Third, water
Gardenia likes humid environment. During the growth period from April to September, keep the soil moist, and the leaves will be wet when watering, and the leaves can be sprayed at night to keep the humidity. If the plant grows too vigorously, don't water it at night, but water it after the sun comes out in the morning.
In the northern alkaline water area, when watering, leave the tap water for one day and then water it. 3~5 days, pouring a little citric acid water solution can keep the leaves green.
Fourth, the light
The growth of gardenia needs plenty of sunshine. If it is placed in the semi-shade for a long time, the flower branches will be thin and slender. During maintenance, except for the need for shading at noon in July and August and hibernation in winter, it can be maintained in the sun at other times.
Gardenia jasminoides, also known as gardenia and gardenia. Belonging to Rubiaceae, it is an evergreen shrub with lush foliage, evergreen leaves and fragrant flowers. It is an important garden ornamental plant. The leaves are opposite or three-bladed, and the leaves are obovate, leathery, green and shiny. Berries are ovoid, yellow or orange.
In addition to ornamental, its flowers, fruits, leaves and roots can be used as medicine, which has the effects of purging fire and relieving annoyance, clearing away heat and diuresis, cooling blood and detoxifying. Flowers can be used as the spice of tea, and fruits can diminish inflammation and dispel heat. It is an excellent fragrant flower.
Gardenia likes a well-lit and well-ventilated environment, but avoid strong light exposure. It should be planted in loose and fertile acid soil with good drainage. It can be propagated by cutting, layering, dividing plants or sowing.
Mainly distributed in Guizhou, Sichuan, Jiangsu, Zhejiang, Anhui, Jiangxi, Guangdong, Yunnan, Fujian, Taiwan Province, Hunan, Hubei and other places. Like warm and humid, sunny, cold-resistant, semi-cloudy, afraid of stagnant water, loose, fertile and acidic sandy loam, prone to yellowing of leaves, originated in China.
Gardenia usually refers to a variety of gardenia with double petals for ornamental purposes. Leather is oblong and shiny. Flowers axillary, short pedunculate and fleshy. The fruit is ovoid to oblong, with 5-9 straight wings, 1 room, and many seeds embedded in the fleshy placenta. Flowering from May to July, the flowers, leaves and fruits are beautiful, and the flowers are fragrant. Roots, leaves and fruits can be used as medicine, which has the effects of purging fire and relieving annoyance, clearing away heat and diuresis, cooling blood and detoxifying. Its fruit can be used as paint for painting.