When will bitter chrysanthemum sow

Bitter chrysanthemum is suitable to be planted from March to April in spring and from September to October in autumn. In the north, spring sowing is suitable; in the south, it can be sown in spring and autumn. The optimum temperature for seed germination, seedling growth and plant growth of bitter chrysanthemum is 15: 17 ℃, 12: 20 ℃ and 10: 20 ℃ respectively.

In the north, spring sowing is suitable; in the south, it can be sown in spring and autumn. However, in order to make use of winter fallow fields and solve the shortage of green forage grass in winter and spring, it is better to sow in autumn; in the south of the mid-tropics, seeds can be sowed in all seasons. Because the seeds of bitter chrysanthemum have no dormancy period, they can be sowed and produced in the same year.

Bitter chrysanthemum likes cold and cool, likes dampness and water, is fond of fertilizer, is not tolerant to drought, and is more hardy. It can be planted on hillsides, under forests, fields, open spaces or near water at an altitude of 170-3200 meters. The suitable temperature for seed germination is 15: 17 ℃, the suitable temperature for seedling growth is 12: 20 ℃, the suitable temperature for plant growth is 10: 20 ℃, the growth is slow at 5 ℃, and the short-term low temperature of-10 ℃ can still keep green. Bitter chrysanthemum is suitable to be planted in sandy soil or clay with loose soil, rich organic matter and good water and fertility conservation, and it is suitable to be slightly acidic to neutral with a pH value of 6-6.5.