Companion plants for Begonia

Begonia blooms from May through October. It wants part shade and moderate water. The 8 companion pairings below each state why the pairing works.

Blooming before Begonia opens

Hellebore
Shares part shade and moderate water; blooms in late winter, before this one opens; evergreen, so the bed keeps its shape through winter; echoes the pink.
Camellia
Shares part shade and moderate water; blooms in midwinter, before this one opens; evergreen, so the bed keeps its shape through winter; stands well above at 6.6 ft, a canopy to plant beneath.
Windflower
Takes part sun to part shade and moderate water; blooms in early spring, before this one opens; lower at 6 in, for the front of the border.

Azalea
Shares part shade and moderate water; opens in mid spring and overlaps into this one's season; evergreen, so the bed keeps its shape through winter; taller at 3.9 ft, for the layer behind it.
Bergenia
Takes part sun to part shade and moderate water; opens in mid spring and overlaps into this one's season; evergreen, so the bed keeps its shape through winter; echoes the pink.
Northern Sea Oats
Shares part shade and moderate water; its seed heads stand through winter, for structure and the birds; taller at 3.3 ft, for the layer behind it.
Gardenia
Takes part sun to part shade and moderate to high water; evergreen, so the bed keeps its shape through winter; taller at 3.9 ft, for the layer behind it; a soft color beside the pink.
Christmas Fern
Takes part shade to full shade and moderate water; evergreen, so the bed keeps its shape through winter.