Phacelia
Phacelia is one of the top honey-producing flowers for honeybees. Flowering will occur 6-8 weeks after germination and continue for a similar period with plants growing about 2-3 feet tall. Phacelia can germinate well in cooler temperatures (37°F – 68°F) and requires well drained soils. While Phacelia is excellent in improving soil aggregate structure, it is shallow rooted and not tolerant to shade.