When do gardenia seeds germinate? The latest answer explained in detail
Gardenia is cultivated in most parts of China, concentrated in East China and most areas of Southwest and Central South China. It likes light and can also tolerate shade; under shaded conditions the leaves are dark green but flowering is somewhat poorer. It likes a warm and humid climate, tolerates heat and is also slightly cold-tolerant, and prefers fertile, well-drained, acidic light clay loam. It is also tolerant of drought and poor soil, but the plant tends to age easily. Now let us take a look together at when gardenia seeds germinate!
When do gardenia seeds germinate?
Gardenia seeds can emerge about 20 days after sowing. Gardenia can be sown in spring or autumn, generally mostly in spring. Spring sowing is done around Yushui (Rain Water), and autumn sowing is done around Qiufen (Autumn Equinox). After sowing, seedlings can emerge in about 20 days. After emergence, be sure to remove the covering grass in time. During the seedling stage, weeds should be removed frequently, taking care not to damage the seedling roots. After weeding, dilute human manure and urine water should be applied each time. After one year of raising seedlings, they can be transplanted.
How are gardenia seeds planted?
1. Seed selection: Choose plump, dark red ripe fruits and dry them in the sun or in the shade with the shell still on for use as seed. After digging out the seeds, rub them apart in hot water to remove floating seeds or impurities, then scoop out the sunken, plump seeds and spread them on a bamboo mat, placing them in a ventilated place to dry off excess moisture.
2. Land preparation: Choose sandy loam with deep, loose, fertile soil. After plowing 1 to 1.5 chi deep, make beds, apply 20 to 30 dan of human manure and urine per mu, and after the soil dries, level the bed surface. On the bed surface, open sowing furrows at a row spacing of 6 to 7 cun, with the furrows about 1 cun deep.
3. Sowing: Gardenia can be sown in spring or autumn. Spring sowing is done around Yushui (Rain Water), and autumn sowing is done around Qiufen (Autumn Equinox). When sowing, mix the seeds with plant ash and sow them evenly in the sowing furrows, then cover the sowing furrows level with fine soil or burnt soil, and keep the soil moist regularly to help emergence.
4. Seedling raising: After sowing gardenia, water frequently to keep the bed surface moist. Seedlings can emerge in about 20 days. After emergence, remove the covering grass on the bed surface. When the seedlings grow 2 to 3 true leaves, thin them out, removing overly dense seedlings and weak seedlings, and at the same time apply appropriate topdressing.
5. Planting out: For gardenia sown in autumn and cultivated until the end of the following autumn or early winter, when the seedlings are more than 30 cm tall, they can be planted out. For spring-sown seedling beds, by the spring of the following year when the seedlings reach 30 cm tall, they can be planted out. If they do not reach 30 cm tall, continue cultivating them until the end of autumn or early winter for transplanting.
How should gardenia be grown to do well?
1. Potting soil: Gardenia is an indicator flower of acid-loving soil, with a suitable pH of 5 to 6. For cultivation soil, you can choose leaf mold, peat soil, or composted sawdust plus half garden soil. Do not use old wall soil or coal cinder. Using commercially available Clivia soil is more convenient and practical.
2. Watering: Gardenia likes moist soil and relatively high air humidity. During the growing period from April to September, keep the potting soil moist. Usually, when the potting soil turns white, it can be watered, thoroughly at one time. But after the flower buds appear, watering should not be too much, so as to avoid bud drop.
3. Fertilizing: Gardenia is a fertilizer-loving plant. Add 3% decomposed cake fertilizer to the culture soil as base fertilizer. During the growing season, use alum fertilizer water made by composting cake fertilizer with ferrous sulfate and water it once a week. During the bud stage, watering once to twice with a 0.1% potassium dihydrogen phosphate aqueous solution can make the flowers larger and the fragrance richer.
4. Light: Gardenia likes light. It can also grow in semi-shade for a long time, but the flowering branches are longer and the flowers are fewer. Except for the need for shade during strong midday light from July to August and during the winter dormant period, it generally needs to be kept in sunlight for care so that it can have abundant flowers and lush leaves.
5. Soil changing: It is better to change the soil for gardenia in March in spring. After taking it out of the pot, cut off some old roots, shake off half of the old soil, plant it into the pot with new soil, then water thoroughly, place it in a warm semi-shade place, and when new buds begin to sprout, place it in sunlight for care.
6. Pruning: After gardenia blooms each year, prune lightly, cutting off inner branches and diseased or weak branches, and shorten individual leggy branches. But remember that gardenia must not be shortened at the branch tips in spring, otherwise it will not bloom that year.
7. Overwintering: Gardenia can overwinter outdoors in the Qinling area of China, but potted gardenia roots will be damaged after severe winter. Potted flowers can be placed in a cold room at about 5°C to make them dormant, protecting the root system well, and placed in a windproof, sunny place to overwinter, so they recover quickly in spring and bloom early.