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

Rock Cress
Shares full sun and low to moderate water; blooms in mid spring, before this one opens; low at 4 in, to carpet the ground beneath; both offer pollinator forage, in different months.

Creeping Phlox
Shares full sun and low to moderate water; blooms in mid 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.

Flowering Crabapple
Shares full sun and moderate water; blooms in mid spring, before this one opens; both are strong pollinator plants, and they feed in different months; taller at 20 ft, for the layer behind it.

Hyacinth
Shares full sun and moderate water; blooms in early spring, before this one opens; lower at 10 in, for the front of the border; both offer pollinator forage, in different months.

Crocus
Shares full sun and low to moderate 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.
Blooming alongside

Sea Thrift
Shares full sun and low to moderate water; opens in mid spring and overlaps into this one's season; lower at 8 in, for the front of the border; evergreen, so the bed keeps its shape through winter.

Autumn Crocus
Shares full sun and moderate water; overlaps, then carries the display into mid fall; low at 6 in, to carpet the ground beneath; both offer pollinator forage.

Pansy
Takes full sun to part sun and moderate water; opens in early spring and overlaps into this one's season; lower at 8 in, for the front of the border; both offer pollinator forage.