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

Feather Reed Grass
Shares full sun and moderate water; blooms in early summer as this one finishes; leafs out to hide the ripening bulb foliage as it dies back; its seed heads stand through winter, for structure and the birds.

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

False Indigo
Shares full sun and low to moderate water; leafs out to hide the ripening bulb foliage as it dies back; overlaps, then carries the display into early summer; its seed heads stand through winter, for structure and the birds.

Delphinium
Shares full sun and moderate water; blooms in early summer as this one finishes; leafs out to hide the ripening bulb foliage as it dies back; taller at 4.6 ft, for the layer behind it.

Hollyhock
Shares full sun and moderate water; blooms in early summer as this one finishes; leafs out to hide the ripening bulb foliage as it dies back; taller at 5.9 ft, for the layer behind it.

Fountain Grass
Shares full sun and low to moderate water; blooms in late summer, extending the bed's season; its seed heads stand through winter, for structure and the birds; leafs out to hide the ripening bulb foliage as it dies back.

Lavender
Shares full sun and low to moderate water; blooms in early summer as this one finishes; evergreen, so the bed keeps its shape through winter; purple against orange, for contrast.

Sunflower
Shares full sun and moderate water; blooms in midsummer, extending the bed's season; its seed heads stand through winter, for structure and the birds; taller at 6.6 ft, for the layer behind it.