Companion plants for Siberian Squill
Siberian Squill blooms from March through April. It wants full sun and moderate water. The 8 companion pairings below each state why the pairing works.
Taking over as Siberian Squill finishes

False Indigo
Shares full sun and low to moderate water; blooms in late spring as this one finishes; leafs out to hide the ripening bulb foliage as it dies back; stands well above at 3.5 ft, a canopy to plant beneath.

Bergenia
Takes full sun to part sun and moderate water; leafs out to hide the ripening bulb foliage as it dies back; overlaps, then carries the display into late spring; evergreen, so the bed keeps its shape through winter.

Sneezeweed
Shares full sun and moderate water; blooms in midsummer, extending the bed's season; stands well above at 3.5 ft, a canopy to plant beneath; its seed heads stand through winter, for structure and the birds.

Blue Oat Grass
Shares full sun and low to moderate water; leafs out to hide the ripening bulb foliage as it dies back; blooms in early summer, extending the bed's season; evergreen, so the bed keeps its shape through winter.

Feather Reed Grass
Shares full sun and moderate water; blooms in early summer, extending the bed's season; stands well above at 5 ft, a canopy to plant beneath; its seed heads stand through winter, for structure and the birds.

Little Bluestem
Shares full sun and low to moderate water; blooms in late summer, extending the bed's season; stands well above at 3.5 ft, a canopy to plant beneath; its seed heads stand through winter, for structure and the birds.

Sunflower
Shares full sun and moderate water; blooms in midsummer, extending the bed's season; stands well above at 6.5 ft, a canopy to plant beneath; its seed heads stand through winter, for structure and the birds.

Ninebark
Shares full sun and moderate water; blooms in late spring as this one finishes; stands well above at 6.5 ft, a canopy to plant beneath; its white flowers settle the blue.