Companion plants for False Indigo
False Indigo blooms from May through June. It wants full sun and low water. The 8 companion pairings below each state why the pairing works.
Blooming before False Indigo opens

Windflower
Takes full sun to part sun and low to moderate water; blooms in early spring, before this one opens; low at 6 in, to carpet the ground beneath; both are strong pollinator plants, and they feed in different months.

Crocus
Shares full sun and low water; blooms in late winter, before this one opens; low at 4 in, to carpet the ground beneath; both offer pollinator forage, in different months.

Grape Hyacinth
Shares full sun and low to moderate water; blooms in early spring, before this one opens; lower at 8 in, for the front of the border; both offer pollinator forage, in different months.
Taking over as False Indigo finishes

Anise Hyssop
Shares full sun and low water; blooms in midsummer as this one finishes; both are strong pollinator plants, and they feed in different months; both are North American natives.

Chick Charms Berry Blues Hens & Chicks
Shares full sun and low water; blooms in midsummer as this one finishes; low at 4 in, to carpet the ground beneath; both are strong pollinator plants, and they feed in different months.

Fernbush
Shares full sun and low water; blooms in midsummer as this one finishes; both are strong pollinator plants, and they feed in different months; both are North American natives.

Rubber Rabbitbrush
Shares full sun and low water; blooms in midsummer as this one finishes; both are strong pollinator plants, and they feed in different months; both are North American natives.
Blooming alongside

Creeping Phlox
Shares full sun and low water; opens in mid spring and overlaps into this one's season; low at 6 in, to carpet the ground beneath; both are strong pollinator plants.