What are the solar terms for poplar germination?

Willow will germinate in February, and poplar will not germinate until the middle and late March of the lunar calendar.

Poplar likes light. Temperate climate and cold tolerance are required. The requirement for water is very strict, because its photosynthesis and transpiration are higher than those of other broad-leaved trees. Poplar seeds are small, and the capsules will crack when they mature, so the seeds are collected from cutting ears or ground. Seeds are easy to lose germination ability, so they should be sown with the harvest.

Willow is a kind of plant with ecological amplitude, which has wide adaptability to the environment. Like light, wet and cold, it is a medium-sized wet tree species. However, some species are also more drought-tolerant and salt-tolerant, and can grow in places with poor ecological conditions, and grow better in plain areas with superior site conditions. The average life span is 20 ~ 30 years, and a few varieties can reach 100 years or more. The annual growth period is long, with early germination and late defoliation, and individual tree species in the south are evergreen trees.