Companion plants for Petunia

Petunia blooms from May through October. It wants full sun and moderate water. The 8 companion pairings below each state why the pairing works.

Blooming before Petunia opens

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.
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.

Joe Pye Weed
Shares full sun and moderate to high water; its seed heads stand through winter, for structure and the birds; both offer pollinator forage; taller at 5.9 ft, for the layer behind it.
Sneezeweed
Shares full sun and moderate water; its seed heads stand through winter, for structure and the birds; both offer pollinator forage; taller at 3.3 ft, for the layer behind it.
Perennial Sunflower
Shares full sun and moderate water; its seed heads stand through winter, for structure and the birds; both offer pollinator forage; taller at 4.9 ft, for the layer behind it.
Rosemary
Shares full sun and low to moderate water; opens in early spring and overlaps into this one's season; evergreen, so the bed keeps its shape through winter; both offer pollinator forage.
Lilac
Shares full sun and moderate water; opens in mid spring and overlaps into this one's season; stands well above at 9.8 ft, a canopy to plant beneath; echoes the purple.
Viburnum
Shares full sun and moderate water; opens in mid spring and overlaps into this one's season; stands well above at 6.6 ft, a canopy to plant beneath; its white flowers settle the purple.