Companion plants for Spiderwort
Spiderwort blooms from June through August. It wants part sun and moderate water. The 8 companion pairings below each state why the pairing works.
Blooming before Spiderwort opens

Drooping Leucothoe
Takes part sun to part shade and moderate water; blooms in late spring, before this one opens; both offer pollinator forage, in different months; evergreen, so the bed keeps its shape through winter.

Pinxterbloom Azalea
Takes part sun to part shade and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months; evergreen, so the bed keeps its shape through winter.

Castle Rouge Blue Holly
Takes full sun to part sun and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months; evergreen, so the bed keeps its shape through winter.
Taking over as Spiderwort finishes

Aster
Takes full sun to part sun and moderate water; blooms in early fall as this one finishes; both offer pollinator forage, in different months; its seed heads stand through winter, for structure and the birds.

Fireworks Goldenrod
Takes full sun to part sun and moderate water; blooms in early fall as this one finishes; both offer pollinator forage, in different months; its seed heads stand through winter, for structure and the birds.

Perennial Sunflower
Takes full sun to part 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.

Pink Muhly Grass
Takes full sun to part sun and low to moderate water; blooms in early fall as this one finishes; both offer pollinator forage, in different months; its seed heads stand through winter, for structure and the birds.

Little Bluestem
Takes full sun to part sun and low to moderate water; overlaps, then carries the display into early fall; its seed heads stand through winter, for structure and the birds; both offer pollinator forage.