Plants that bloom in September in Zone 10 with lavender flowers

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.

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.

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.

Sweet Alyssum

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