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

English Daisy
Shares full sun and moderate to high water; blooms in mid spring, before this one opens; low at 6 in, to carpet the ground beneath; both offer pollinator forage, in different months.

Chives
Shares full sun and moderate to high water; blooms in late spring, before this one opens; both offer pollinator forage, in different months; lower at 12 in, for the front of the border.

Pansy
Takes full sun to part sun and moderate to high 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.

Ninebark
Shares full sun and moderate to high water; blooms in late spring, before this one opens; both offer pollinator forage, in different months; both are North American natives.

Hyacinth
Shares full sun and moderate to high 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.
Taking over as Hardy Hibiscus finishes

Winterberry
Shares full sun and high water; blooms in mid fall as this one finishes; both offer pollinator forage, in different months; both are North American natives.

Aster
Shares full sun and moderate to high water; overlaps, then carries the display into mid fall; its seed heads stand through winter, for structure and the birds; both offer pollinator forage.
Blooming alongside

White Clover
Shares full sun and moderate to high water; opens in late spring and overlaps into this one's season; low at 4 in, to carpet the ground beneath; both offer pollinator forage.