How to plant gardenia seeds?

Gardenia is an evergreen shrub plant of Rubiaceae, which is distributed in central and southern China. The leaves are bright green, evergreen all the seasons, the flowers are white and fragrant, and can be planted in clusters or arranged on the edge of the forest, in front of the courtroom, in the corner, and by the roadside. It is also very suitable for balcony greening, potted flowers, cut flowers or bonsai. Let's take a look at how to plant gardenia seeds.

What are the conditions for growing gardenia?

1. Illumination: gardenia flowers can also tolerate shade. Under shade conditions, the leaf color is dark green, but the flowering is slightly worse.

2, temperature: gardenia likes warm and humid climate, heat-resistant and slightly cold-resistant (- 3 ℃).

3. Soil: gardenia likes fertile, well-drained and acidic light clay loam, and it is also resistant to drought and barren, but the plant is easy to senescence.

4. Moisture: gardenia likes moist soil and larger air humidity, and should be watered during the growing period.

How to sow gardenia seeds?

1. Seed selection: choose full, dark red ripe fruits to be dried or dried, dig out the seeds and rub them in hot water to remove floating seeds or impurities, then remove the sunken full seeds on the bamboo mat and dry the excess moisture in a ventilated place.

2. Soil preparation: select the sandy loam with deep, loose and fertile soil, ploughing for 1-1.5 feet and then take off the bed, apply 20-30 piculs of human feces per mu, flatten the border surface after the soil is dry, and sow the ditch according to 6-7 inch row spacing on the border surface, the ditch depth is about 1 inch.

3. Sowing: gardenia can be sowed in spring or autumn, sowed in spring before and after Rain Water, and sowed in autumn before and after the Autumn Equinox. When sowing, the seeds are mixed with fire ash and sowed evenly in the sowing ditch, and then cover the sowing ditch with fine soil or fire soil. Often keep the soil moist to facilitate seedling emergence.

4. Raising seedlings: after sowing, gardenia flowers are often watered to keep the border surface moist, and the seedlings can emerge in about 20 days. After emergence, the cover grass on the border surface is removed, and when the seedlings grow out of 2-3 true leaves, the seedlings are thinned, and the overdense seedlings and weak seedlings are removed. At the same time, fertilizer should be applied properly.

5. Planting: gardenia is sown in autumn and cultivated to the end of autumn and the beginning of winter in the second year. The seedlings can be planted when the height of the seedlings is more than 30 cm. If they do not reach the height of 30 cm in the spring, they will continue to be cultivated and transplanted in late autumn and early winter.

How to cultivate gardenia?

1. Potted soil: gardenia is an indicator flower in acidic soil, and the suitable pH value is 5 to 6. Cultivation soil can choose rotten leaf soil, peat soil or retting sawdust plus half of the garden soil, avoid using old wall soil and cinder, with the market of gentleman orchid soil is more convenient and practical.

2. Watering: gardenia likes moist soil and large air humidity. Keep the basin soil moist during the growth period from April to September. Usually the basin soil can be watered once it turns white. However, after the flower budding, watering should not be too much, so as not to cause bud drop.

3. Fertilization: gardenia is a fertilizer-loving plant. The cultivated soil is supplemented with 3% rotten cake fertilizer as base fertilizer, and the alum fertilizer made by cake fertilizer and ferrous sulfate retting is watered once a week during the growing season. 0.1% potassium dihydrogen phosphate aqueous solution can make the flowers hypertrophic and fragrant.

4. Illumination: gardenia flowers like light and can grow in semi-shade for a long time, but the flower branches are longer and the flowers are less. Except for the strong light from July to August noon and the dormant period in winter, gardenia generally need to be maintained in the sun in order to blossom and flourish.

5. Change the soil: it is better to change the soil in March in spring. Cut off part of the old root after pouring the pot, shake off half of the old soil, pour water after planting in the pot with new soil, put it in a warm semi-shady place, and keep it in the sun when new buds sprout.

6. Pruning: gardenia flowers are trimmed lightly after flowering every year, cutting off internal bore branches, diseased and weak branches, and individual long branches are truncated. But remember that gardenia can not be cut short in spring, otherwise it will not blossom in that year.

7. Overwintering: gardenia can overwinter in the open field in Qinling Mountains of China, but the roots of potted gardenias will be damaged after severe winter. potted flowers can be put in a cold room of about 5 ℃ to make them dormant, protect their roots, and overwinter in leeward and sunny places. Spring recovers quickly and blooms early.