Yes, sugar beets do flower. However, the flowering process is typically part of their biennial life cycle.
Sugar beets are usually grown as a root crop and harvested in their first year. In this first year, they primarily focus on vegetative growth, storing sugar in their large taproot. They do not flower in the first year under normal conditions.
However, if sugar beets are left in the ground for a second year, or if they experience certain stressors in their first year, they will enter a reproductive stage and bolt (produce a flowering stalk).
Here's a breakdown:
- Biennial Nature: Sugar beets are biennials, meaning they complete their life cycle over two years.
- First Year: During the first year, the plant develops a large root for sugar storage. It typically does not flower.
- Second Year (or Bolting): If the beet survives the winter and is left to grow in the second year, it will flower. Also, premature bolting (flowering in the first year) can occur under certain environmental conditions like prolonged cold exposure or stress.
- Anthesis: Flowers reach anthesis (the period when the flower is fully open and functional) approximately 5 to 6 weeks after reproductive development begins. Anthesis can then continue for several weeks.
- Seed Production: The flowers are essential for producing sugar beet seeds.
In summary, while sugar beets typically don't flower in the year they are harvested for sugar production, they are capable of flowering in their second year (or through bolting in their first year) to produce seeds.