Reagan turns green, can a small rape grow into a big rape?

When a small rape is planted in the soil, Reagan turns green and can grow into a big rape.

Brassica napus likes cold climate and is a cold-resistant vegetable. The suitable growth temperature is 18-20℃. At this temperature, Brassica napus will not grow slender, the petiole will thicken, and the base will grow into the cone we like. The suitable germination temperature is 20-25℃. When planting small rapeseed in winter, we must prevent vernalization. Once bolting and flowering, the quality will drop a lot.