Companion plants for Trillium
Trillium blooms from April through May. It wants full shade and moderate water. The 8 companion pairings below each state why the pairing works.
Taking over as Trillium finishes
Rosebay Rhododendron
Takes part shade to full shade and moderate water; blooms in early summer as this one finishes; both are strong pollinator plants, and they feed in different months; evergreen, so the bed keeps its shape through winter.
American Wintergreen
Takes part shade to full shade and moderate water; blooms in early summer as this one finishes; both are strong pollinator plants, and they feed in different months; evergreen, so the bed keeps its shape through winter.
Zigzag Goldenrod
Takes part shade to full shade and moderate water; blooms in late summer, extending the bed's season; both are strong pollinator plants, and they feed in different months; its seed heads stand through winter, for structure and the birds.
Northern Sea Oats
Takes part shade to full shade and moderate water; blooms in midsummer, extending the bed's season; both are strong pollinator plants, and they feed in different months; its seed heads stand through winter, for structure and the birds.
Mountain Laurel
Takes part shade to full shade and moderate water; overlaps, then carries the display into early summer; both are strong pollinator plants; evergreen, so the bed keeps its shape through winter.
Blue Wood Aster
Takes part shade to full shade and moderate water; blooms in late summer, extending the bed's season; both are strong pollinator plants, and they feed in different months; its seed heads stand through winter, for structure and the birds.
Black Cohosh
Takes part shade to full shade and moderate water; blooms in early summer as this one finishes; both are strong pollinator plants, and they feed in different months; taller at 5 ft, for the layer behind it.
Blooming alongside
Snowdrop
Takes part shade to full shade and moderate water; blooms in late winter, before this one opens; both are strong pollinator plants, and they feed in different months; lower at 5 in, for the front of the border.