Plants that bloom in September in Zone 3 with white flowers

Aster

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

Bobo Hydrangea

Dwarf paniculata smothered in blooms. Perfect front-of-border plant that needs almost no care.

Clematis

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

Cleome

Spider-flower with whisker-like stamens and airy blooms. Tall, dramatic annual that self-sows freely.

Coneflower

Tough prairie native with long bloom season and medicinal history.

Cosmos

Airy, dancing flowers on thread-thin stems. Effortless cottage garden charm.

Dahlia

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

Flowering Tobacco

Tubular flowers that release sweet fragrance at dusk. A cottage garden classic that attracts moths and hummingbirds.

Garden Phlox

Billowing clusters of fragrant summer color. A butterfly magnet.

Immortality Iris

Reliable rebloomer with pure white ruffled falls. Blooms spring, then again in fall.

Impatiens

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

Liatris

Blazing star. Spikes that bloom unusually from top to bottom.

Limelight Hydrangea

Cone-shaped blooms open chartreuse, mature to white, then blush pink in fall. Tough as nails.

Little Lime Hydrangea

Compact Limelight. Same color show in a smaller package perfect for borders and containers.

Morning Glory

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

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.

Pinky Winky Hydrangea

Two-tone blooms with white tips and pink bases. Strong stems hold heavy flower heads upright.

Quick Fire Hydrangea

Blooms a full month before other paniculatas. White cones age to deep rosy pink by fall.

Rose

The queen of the garden. Modern varieties are surprisingly low-maintenance.

Salvia

Vertical flower spikes that hummingbirds and bees cannot resist.

Snapdragon

Vertical flower spikes with squeeze-open blooms. Kids love them.

Sweet Alyssum

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

Turtlehead

Snapdragon-like flowers shaped exactly like a turtle's head. Loves wet feet.

White Swan Coneflower

Pure white drooping petals around a bronze-orange cone. Elegant and underused.

Yarrow

Flat-topped clusters on ferny foliage. Thrives on neglect in poor soil.

Zinnia

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