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

Texas Mountain Laurel
Shares full sun and low water; blooms in early spring, before this one opens; both are strong pollinator plants, and they feed in different months; evergreen, so the bed keeps its shape through winter; they only overlap in zones 7 to 8.

Fragrant Sumac
Shares full sun and low water; blooms in mid spring, before this one opens; both are strong pollinator plants, and they feed in different months; taller at 4.5 ft, for the layer behind it.
Taking over as Catmint finishes

Swamp Sunflower
Shares full sun and low to moderate water; blooms in mid fall as this one finishes; both are strong pollinator plants, and they feed in different months; its seed heads stand through winter, for structure and the birds.

Switchgrass
Shares full sun and low water; overlaps, then carries the display into mid fall; both are strong pollinator plants; its seed heads stand through winter, for structure and the birds.

Fountain Grass
Shares full sun and low water; overlaps, then carries the display into mid fall; both are strong pollinator plants; its seed heads stand through winter, for structure and the birds.
Blooming alongside

Dragon Slayer Adam's Needle Yucca
Shares full sun and low water; both are strong pollinator plants; evergreen, so the bed keeps its shape through winter; taller at 3.5 ft, for the layer behind it.

False Indigo
Shares full sun and low water; both are strong pollinator plants; its seed heads stand through winter, for structure and the birds; taller at 3.5 ft, for the layer behind it.

Little Bluestem
Shares full sun and low water; both are strong pollinator plants; its seed heads stand through winter, for structure and the birds; taller at 3.5 ft, for the layer behind it.