Late Summer

Plants that bloom in August in Zone 4 with lavender flowers

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All Zone 4 plantsAll lavender flowersAll August blooms
Anise HyssopPerennialJul-Sep
Anise Hyssop
Lavender-blue spikes with licorice-scented foliage. A pollinator powerhouse that blooms for months.
Z4-9
AsterPerennialAug-Nov
Aster
The grand finale of the garden season. Essential for fall pollinators.
Z3-8
AstilbePerennialJun-Aug
Astilbe
Feathery plumes that light up shady, moist spots like nothing else can.
Z3-8
August Moon HostaPerennialJul-Aug
August Moon Hosta
Glowing gold foliage all season, and one of the best hostas for brighter spots with some morning sun.
Z3-8
Bee BalmPerennialJun-Aug
Bee Balm
Shaggy, crown-shaped flowers that hummingbirds fight over.
Z3-10
Blue Angel HostaPerennialJul-Aug
Blue Angel Hosta
A mammoth shade-garden hosta with thick, corrugated blue-gray leaves up to 18 inches long that slugs leave alone, topped by fragrant lavender flower spikes in midsummer.
Z3-8
CampanulaPerennialJun-Aug
Campanula
Open, nodding bells in clear blue on tall graceful stems. Self-sows into refined cottage garden drifts.
Z3-8
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
Culver's RootPerennialJul-Aug
Culver's Root
Tall tapering spires of tiny white flowers that bees mob. Vertical and elegant at the back of the border.
Z3-8
DahliaBulbJul-Oct
Dahlia
Endless forms from dinner-plate to pompom. The obsession of flower farmers.
Z3-10
Empress Wu HostaPerennialJul-Aug
Empress Wu Hosta
The world's largest hosta. Individual leaves can exceed two feet. A bold statement in any shade garden.
Z3-8
Frances Williams HostaPerennialJul-Aug
Frances Williams Hosta
Classic blue-green heart-shaped leaves with wide gold margins that make this one of the all-time great hostas.
Z3-8
Garden PhloxPerennialJul-Sep
Garden Phlox
Billowing clusters of fragrant summer color. A butterfly magnet.
Z3-8
Hagley Hybrid ClematisVineJun-Aug
Hagley Hybrid Clematis
Soft shell-pink flowers with a hint of mauve that fade beautifully in part shade and bloom reliably all summer.
Z4-9
Halcyon HostaPerennialJul-Aug
Halcyon Hosta
The bluest hosta you can grow. Thick, heavily textured leaves resist slugs better than most.
Z3-8
HostaPerennialJul-Aug
Hosta
The undisputed queen of shade gardening. Foliage in every green and blue.
Z3-8
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
June HostaPerennialJul-Aug
June Hosta
Gold center streaked with blue-green margins. Color shifts through the season. A collector's favorite.
Z3-8
Obedient PlantPerennialJul-Sep
Obedient Plant
Spikes of snapdragon-like flowers that can be pushed and stay where moved, earning a very literal common name.
Z3-9
Patriot HostaPerennialJul-Aug
Patriot Hosta
Dark green leaves with crisp white margins. Classic variegated hosta that brightens shady spots.
Z3-8
PetuniaAnnualMay-Oct
Petunia
Cascading color for containers and beds. Blooms nonstop until frost.
Z3-10
Russian SagePerennialJul-Oct
Russian Sage
Airy lavender clouds on silver stems. Thrives in heat and poor soil.
Z4-9
Sagae HostaPerennialJul-Aug
Sagae Hosta
Huge gray-blue leaves with creamy margins on a stately, vase-shaped plant that wins awards for good reason.
Z3-8
Stained Glass HostaPerennialJul-Aug
Stained Glass Hosta
Glossy gold center with dark green margins, like light through a cathedral window.
Z3-8
Sum and Substance HostaPerennialJul-Aug
Sum and Substance Hosta
Chartreuse giant that can take more sun than most hostas. Heart-shaped leaves grow enormous.
Z3-8
Sweet AlyssumAnnualApr-Oct
Sweet Alyssum
Honey-scented carpet of tiny flowers. The best living edging plant.
Z3-10
Walker's Low CatmintPerennialMay-Sep
Walker's Low Catmint
Perennial Plant of the Year. Billowy lavender-blue spikes that rebloom hard after a shear.
Z3-9
Wide Brim HostaPerennialJul-Aug
Wide Brim Hosta
Blue-green leaves with wide creamy-white margins that age to a clean white, a standout performer in any shade garden.
Z3-8
Wild BergamotPerennialJul-Aug
Wild Bergamot
The wild cousin of bee balm. Lavender puffs alive with pollinators. Tougher and more mildew-resistant.
Z3-9
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