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

Canterbury Bells
Shares full sun and moderate water; blooms in late spring, before this one opens; lower at 2.3 ft, for the front of the border; both offer pollinator forage, in different months.

Stock
Shares full sun and moderate water; blooms in mid spring, before this one opens; low at 1.6 ft, to carpet the ground beneath; both offer pollinator forage, in different months.

African Daisy
Shares full sun and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months; a soft color beside the yellow.

Rosemary
Shares full sun and low to moderate water; blooms in early spring, before this one opens; both offer pollinator forage, in different months; evergreen, so the bed keeps its shape through winter; they only overlap in zones 9 to 10.
Blooming alongside

Gardenia
Takes full sun to part sun and moderate to high water; opens in late spring and overlaps into this one's season; evergreen, so the bed keeps its shape through winter; lower at 3.9 ft, for the front of the border.

Dill
Shares full sun and moderate water; opens in early summer and overlaps into this one's season; lower at 3 ft, for the front of the border; both offer pollinator forage.

Pampas Grass
Shares full sun and low to moderate water; overlaps, then carries the display into mid fall; its seed heads stand through winter, for structure and the birds; lower at 8.2 ft, for the front of the border.

Aloe
Shares full sun and low to moderate water; opens in late spring and overlaps into this one's season; a soft color beside the yellow.