Growth habits of Fritillaria thunbergii

Fritillaria thunbergii likes wet and cool climatic conditions. It requires moist soil during its growth period and avoids drought, but it is afraid of waterlogging.

The optimum temperature for seedling emergence was 6℃~7℃, the optimum temperature for plant growth was 10℃~22℃, and the growth stopped below 4℃ or above 30℃.

Bulbs can expand normally at 5 cm underground, dormancy at 10℃~25 ℃ and freezing at-6℃. Both bulbs and seeds of Fritillaria thunbergii have dormancy. Bulbs begin to dormancy after withering from the ground, and dormancy can be released from natural summer to September. The dormancy of seeds can also be released after 2 months at 5-10℃ or natural overwintering. Therefore, autumn sowing is adopted in production.

The suitable temperature for flowering is about 22℃, and there is plenty of sunshine.

The bud differentiation of Fritillaria thunbergii had already proceeded when the bulb was dormant, accelerated in September, and basically completed in the middle of November. In late November, the main bud sprouted and extended from the surface of the mother bulb. In Jiangsu and Zhejiang provinces, in the middle and late February, in Henan Province from the late February to the early March, in Beijing in the middle and late March, buds were unearthed. Fritillaria thunbergii plants grow for about 1 month, bud appears at the top, flowers bloom gradually from bottom to top, flowering lasts 10~20 days. After flowering, new bulbs appeared in the underground part, and the mother bulbs gradually withered. The withering time of the aboveground part is roughly the same everywhere, all in the middle and late May, and the underground bulb turns into dormancy period.