Early Fall

Plants that bloom in September in Zone 3 with purple flowers

31 plants match

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All Zone 3 plantsAll purple flowersAll September blooms
Annual VincaAnnualMay-Nov
Annual Vinca
Glossy-leaved heat champion (botanically unrelated to true Vinca minor) that blooms through humidity that wilts everything else.
Z3-11
AsterPerennialAug-Nov
Aster
The grand finale of the garden season. Essential for fall pollinators.
Z3-8
Bloomerang LilacShrubMay-Sep
Bloomerang Lilac
Blooms in spring, then reblooms summer through frost. Compact habit with classic lilac fragrance.
Z3-7
Cat's Meow CatmintPerennialMay-Sep
Cat's Meow Catmint
Tidy, dome-shaped habit that never flops open. Stays compact without shearing.
Z3-9
CatmintPerennialMay-Sep
Catmint
Billowy lavender-blue haze that blooms all season if you shear it back.
Z3-10
ClematisVineMay-Sep
Clematis
The queen of flowering vines. Over 300 species, something for every spot.
Z3-10
CleomeAnnualJun-Sep
Cleome
Spider-flower with whisker-like stamens and airy blooms. Tall, dramatic annual that self-sows freely.
Z2-11
ConeflowerPerennialJun-Sep
Coneflower
Tough prairie native with long bloom season and medicinal history.
Z3-10
DahliaBulbJul-Oct
Dahlia
Endless forms from dinner-plate to pompom. The obsession of flower farmers.
Z3-10
Garden PhloxPerennialJul-Sep
Garden Phlox
Billowing clusters of fragrant summer color. A butterfly magnet.
Z3-8
GomphrenaAnnualJun-Oct
Gomphrena
Papery clover-shaped pom-poms on wiry stems. Drought-proof, deer-proof, and dries perfectly for winter arrangements.
Z3-10
ImpatiensAnnualMay-Oct
Impatiens
The shade annual champion. Flowers prolifically where nothing else will.
Z3-10
Joe-Pye WeedPerennialJul-Sep
Joe-Pye Weed
Towering native with mauve domes that butterflies swarm in late summer.
Z3-8
Karma Choc DahliaBulbJul-Oct
Karma Choc Dahlia
Velvety dark burgundy waterlily blooms that read almost black in low light. Strong stems built for the vase.
Z3-10
LiatrisPerennialJul-Sep
Liatris
Blazing star. Spikes that bloom unusually from top to bottom.
Z3-10
LisianthusAnnualJun-Oct
Lisianthus
Rose-like ruffled blooms with the vase life of a chrysanthemum. The flower farmer's secret weapon for high-end arrangements.
Z2-11
MonkshoodPerennialAug-Sep
Monkshood
Deep indigo-blue hooded flowers on tall spikes in late summer. One of the few genuinely blue flowers that grows in shade.
Z3-7
Morning GloryAnnualJun-Oct
Morning Glory
Fast-climbing vine with trumpets that open fresh every morning.
Z3-10
PentasAnnualMay-Nov
Pentas
Star-shaped flower clusters that hummingbirds and butterflies hit on every pass. Blooms nonstop in heat that stops impatiens cold.
Z3-11
PetuniaAnnualMay-Oct
Petunia
Cascading color for containers and beds. Blooms nonstop until frost.
Z3-10
PickerelweedPerennialJun-Sep
Pickerelweed
Spikes of violet-blue flowers above glossy arrow-shaped leaves. Native pond and stream bank staple.
Z3-10
PortulacaAnnualMay-Oct
Portulaca
Succulent-leaved sun lover with silky rose-like blooms that thrives where pavement, rock, or sand defeats everything else.
Z3-10
Powwow Wild Berry ConeflowerPerennialJun-Sep
Powwow Wild Berry Coneflower
Deep rose-purple petals and a bronzy cone on a compact reblooming plant that won't sprawl.
Z3-9
SalviaPerennialMay-Sep
Salvia
Vertical flower spikes that hummingbirds and bees cannot resist.
Z3-10
ScabiosaAnnualJun-Oct
Scabiosa
Pincushion blooms on long wiry stems dance over fine foliage. Pollinator magnet that keeps producing if you keep cutting.
Z3-11
SnapdragonAnnualApr-Sep
Snapdragon
Vertical flower spikes with squeeze-open blooms. Kids love them.
Z3-10
StaticeAnnualJun-Sep
Statice
Stiff papery flower clusters that dry to keep their color for years. A cut-flower farmer staple for wreaths and dried bouquets.
Z2-11
Sweet AlyssumAnnualApr-Oct
Sweet Alyssum
Honey-scented carpet of tiny flowers. The best living edging plant.
Z3-10
Thomas Edison DahliaBulbJul-Oct
Thomas Edison Dahlia
Rich royal purple dinner plate blooms with formal decorative form. One of the few true purples and a showstopper in late-summer beds.
Z3-10
Vintage Wine ConeflowerPerennialJul-Sep
Vintage Wine Coneflower
Wine-purple petals that age to rose on a robust, well-branched plant. One of the most floriferous echinacea you can grow.
Z3-9
ZinniaAnnualJun-Oct
Zinnia
Easy-grow annual with electric colors. Cut-and-come-again champion.
Z3-10
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