How to promote the normal germination of seeds
Do you know these? The knowledge of flower propagation, how to promote the normal germination of seeds, the editor of this site will introduce to everyone next.
Different types of flowers have different seed germination periods due to their seed coat structure and physiological characteristics. Some flowers, such as henbit, balsam, and scarlet sage, can quickly sprout if sown at the right time; while others need several months or even longer to germinate, so artificial seed germination must be carried out to shorten the seed dormancy period. The following general knowledge of flower seed propagation is introduced for everyone's reference.
I. Seed selection: The seeds for sowing should be full and plump, free from diseases and pests, and mature uniformly, so that they can germinate healthy seedlings on time.
II. Seed treatment: Different flowers require different seed treatment methods.
Easy-to-germinate seeds can be soaked in water, such as scarlet sage seeds soaked in 40°C warm water for 24 hours, then rinsed clean before sowing. Hard seeds like dracaena, peony, daphne, Chinese Michelia, and Chinese rose need to be soaked in 40°C water for 48 hours first, then sown in the soil. After 20 to 30 days, they can sprout and grow. For short dormant, easy-to-germinate seeds like rose of Sharon, Chinese redbud, and锦带花, soaking seeds in 40°C to 60°C warm water for 24 to 48 hours can be directly sown.
III. Choosing the sowing period: Generally, annual flowers are not cold-resistant, and can be sown after the late frost in the open field. To promote early flowering and more blooms, it can be sown early in a greenhouse or cold frame. Biennial flowers and perennial flowers are cold-resistant, and the seeds are suitable for germination at low temperatures, so it is best to sow in autumn. Most biennial and annual flowers can be sown again, considering the flowering period and planning the sowing according to the number of days required for each flower from germination to flowering. Greenhouse flowers do not have strict seasonal restrictions and can be determined according to the flowering period. Seeds with small particles, loose outer skin, such as chrysanthemum, dracaena, balsam, Chinese rose, and Chinese trumpet creeper, are suitable for sowing in late spring; seeds with larger particles, solid outer skin, or containing oil, such as roses, peonies, pomegranates, kumquats, magnolias, and Chinese Michelia, are suitable for sowing in autumn and winter; seeds with small particles, thin outer skin, and requiring high temperature should be sown immediately after maturity, such as henbit and cyclamen should be sown in early summer, while stonecrop, pansy, and golden melon should be sown in late autumn.
IV. Sowing methods: According to the sowing location, it is divided into open field sowing and pot sowing; according to the method, it is divided into broadcast sowing, row sowing, and hole sowing. Sufficient water should be poured before sowing, and after sowing, the plastic film should be covered or the flower pot should be covered with a glass cover to keep moisture, prevent the soil from drying out, and affect seed germination and seedling emergence. The sowing depth should be about two and a half times the diameter of the seed. Fine seeds like celosia, August chrysanthemum, henbit, and four-season begonia should be mixed with fine sand or soil powder before broadcasting. During the seed germination period, water should be sprayed on the sowing site to keep it moist, but not too much, to prevent reducing soil temperature or rotting seeds and seedling roots.
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