Phacelia
Green manures · Phacelia tanacetifolia · Borage family · Annual
Fits before any crop (unrelated to vegetables); top bee plant; loosens soil.
Spring to late summer; blooms in 6–8 weeks
Seed rate: 1.5 g/m²
A good green manure before: Amaranth, Carrot, Chives, Coriander (cilantro), Oregano, Parsley, Pepper, Thyme, Winter radish (black, daikon)
Draws in the helpers: Green lacewing, Hoverfly, Bumblebees and wild bees, Earthworms