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

Castle Rouge Blue Holly
Shares full sun and moderate water; blooms in mid spring, before this one opens; evergreen, so the bed keeps its shape through winter; taller at 6.5 ft, for the layer behind it.

Indian Hawthorn
Shares full sun and moderate water; blooms in mid spring, before this one opens; evergreen, so the bed keeps its shape through winter; taller at 5 ft, for the layer behind it.

Jade Turtle Cherry Laurel
Shares full sun and moderate water; blooms in late spring, before this one opens; evergreen, so the bed keeps its shape through winter; taller at 3.5 ft, for the layer behind it.

Eye Candy Moss Phlox
Shares full sun and moderate water; blooms in mid spring, before this one opens; evergreen, so the bed keeps its shape through winter; lower at 4 in, for the front of the border.

Rosemary
Shares full sun and low to moderate water; blooms in early spring, before this one opens; evergreen, so the bed keeps its shape through winter; taller at 3.5 ft, for the layer behind it.
Taking over as Lisianthus finishes

Swamp Sunflower
Shares full sun and moderate water; blooms in mid fall as this one finishes; its seed heads stand through winter, for structure and the birds; taller at 6 ft, for the layer behind it.

Aster
Shares full sun and moderate water; overlaps, then carries the display into mid fall; its seed heads stand through winter, for structure and the birds; both are North American natives.
Blooming alongside

Mexican Feather Grass
Shares full sun and moderate water; opens in late spring and overlaps into this one's season; its seed heads stand through winter, for structure and the birds; both are North American natives.