Companion plants for Trumpet Vine
Trumpet Vine 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 Trumpet Vine opens

Viburnum
Shares full sun and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months; shorter at 6.5 ft, an understory layer.

Lilac
Shares full sun and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months; shorter at 10 ft, an understory layer.

Wisteria
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; purple against orange, for contrast.

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.

Eastern Redbud
Takes full sun to part sun and moderate water; blooms in mid spring, before this one opens; both are strong pollinator plants, and they feed in different months; both are North American natives.
Blooming alongside

Winterberry
Shares full sun and moderate to high water; blooms in mid fall as this one finishes; both are strong pollinator plants, and they feed in different months; shorter at 6.5 ft, an understory layer.

Tulip Tree
Shares full sun and moderate water; opens in late spring and overlaps into this one's season; both are strong pollinator plants; both are North American natives.

Bee Balm
Shares full sun and moderate water; both are strong pollinator plants; both are North American natives; red sits close to orange on the wheel.