Plants that bloom in September in Zone 9 with lavender flowers

Anise Hyssop

Lavender-blue spikes with licorice-scented foliage. A pollinator powerhouse that blooms for months.

Bloom-a-Thon Azalea

Repeat-blooming azalea with waves of color spring through fall. Evergreen in mild climates.

Butterfly Bush

Long, arching flower wands that butterflies absolutely lose their minds over.

Catmint

Billowy lavender-blue haze that blooms all season if you shear it back.

Chaste Tree

Long lavender-blue spikes cover this heat-loving shrub all summer. One of the few shrubs that actually blooms in August.

Clematis

The queen of flowering vines. Over 300 species, something for every spot.

Crape Myrtle

The tree of the South. Months of crinkled blooms and gorgeous peeling bark.

Dahlia

Endless forms from dinner-plate to pompom. The obsession of flower farmers.

Hydrangea

Massive mophead blooms that shift color with soil pH. Showstoppers.

Impatiens

The shade annual champion. Flowers prolifically where nothing else will.

Obedient Plant

Spikes of snapdragon-like flowers that can be pushed and stay where moved, earning a very literal common name.

Petunia

Cascading color for containers and beds. Blooms nonstop until frost.

Rose of Sharon

A cold-hardy hibiscus shrub (Hibiscus syriacus) with big tropical-looking blooms in lavender, pink, blue, white, or wine, opening late summer when most flowering shrubs are done.

Russian Sage

Airy lavender clouds on silver stems. Thrives in heat and poor soil.

Stokes Aster

Fringed, shaggy-petaled flowers in shades of cornflower blue that bloom for weeks on a tough Southern native.

Sweet Alyssum

Honey-scented carpet of tiny flowers. The best living edging plant.

Walker's Low Catmint

Perennial Plant of the Year. Billowy lavender-blue spikes that rebloom hard after a shear.