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

Eastern Redbud
Takes full sun to part sun and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months; echoes the pink.

Flowering Cherry
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 pink.

Serviceberry
Takes full sun to part sun and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months; its white flowers settle the pink.
Taking over as Snapdragon finishes

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

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

Winterberry
Shares full sun and moderate to high water; blooms in mid fall as this one finishes; both offer pollinator forage, in different months; taller at 6.5 ft, for the layer behind it.
Blooming alongside

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 6 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.