Zone 9 · winter lows 20°F to 30°F
Perennials for Zone 9
4.1k perennials plants that are hardy through Zone 9, ranked by how many gardeners actually save and grow them.
Most-saved perennials plants for Zone 9
#1 most savedButterfly Weed
Asclepias tuberosa
#2 most savedCheyenne Spirit Coneflower
Echinacea purpurea 'Cheyenne Spirit'
#3 most savedButterfly Weed
Asclepias tuberosa 'Gay Butterflies Mix'

Butterfly Weed Gay Butterflies Milkweed
Asclepias tuberosa 'Gay Butterflies'

Hello Yellow Butterfly Weed
Asclepias tuberosa 'Hello Yellow'

Butterfly Milkweed
Asclepias x hybrida

Old Farmyard Hollyhock
Alcea rosea 'Old Farmyard'

May Night Sage
Salvia nemorosa 'May Night'

Black-eyed Susan
Rudbeckia hirta 'American Gold Rush'

Blanket Flower
Gaillardia x grandiflora 'Mixed Border'

Cinderella Milkweed
Asclepias incarnata 'Cinderella'

Prairie Phlox
Phlox pilosa

Cheyenne Spirit Coneflower
Echinacea purpurea 'Cheyenne Spirit Mix'

Common Milkweed
Asclepias syriaca

Wild Lupine
Lupinus perennis

Purple Coneflower
Echinacea purpurea

Black-eyed Susan
Rudbeckia fulgida 'Goldsturm'

Dahlia
Dahlia variabilis

Blue Tweedia
Tweedia caerulea

Chim Chiminee Black-eyed Susan
Rudbeckia hirta 'Chim Chiminee'

Swamp Milkweed Ice Ballet
Asclepias incarnata 'Ice Ballet'

Cherokee Sunset Black-eyed Susan
Rudbeckia hirta 'Cherokee Sunset'

Joe Pye Weed Euphoria Ruby
Eupatorium purpureum 'Euphoria Ruby'

Beardtongue Rondo
Penstemon barbatus 'Rondo'
Showing the 24 most-saved of 4.1k. See all perennials →
Perennials in Zone 9
What are the best perennials plants for Zone 9?
The 24 above are the most-saved perennials plants that are also rated hardy through Zone 9. Ranking by real gardeners — not by catalog marketing — surfaces the ones gardeners keep coming back to.
Will these survive Zone 9 winters?
Every plant listed here is rated for Zone 9, where winter lows reach 20°F to 30°F. Site conditions still matter: drainage, wind exposure, and a good layer of mulch make the difference between a rated-hardy plant and a happy one.
When is the best time to plant perennials?
Early fall is the quiet champion: warm soil grows roots while cool air reduces stress. Spring works too — just expect to water more through the first summer.
