Plants that bloom in October in Zone 5 with purple flowers

Aster

The grand finale of the garden season. Essential for fall pollinators.

Butterfly Bush

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

Chrysanthemum

The fall icon. Mounds of color when everything else is fading.

Dahlia

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

Impatiens

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

Morning Glory

Fast-climbing vine with trumpets that open fresh every morning.

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.

Rozanne Geranium

Violet-blue saucer flowers on a sprawling mound that blooms from late spring until frost. The most awarded perennial geranium in history.

Sweet Alyssum

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

Toad Lily

Orchid-like spotted flowers when everything else is done. A late-season shade garden gem.

Zinnia

Easy-grow annual with electric colors. Cut-and-come-again champion.