Zone 9 · winter lows 20°F to 30°F

Dahlia for Zone 9

118 Dahlia varieties rated hardy through Zone 9, ranked by how many gardeners actually grow them. Zone 9 is nearly year-round growing — heat tolerance matters more than cold.

118 hardy hereof 126 Dahlia totalLast frost ~late February

The Dahlia that thrive in Zone 9

Dahlia#1 most saved

Dahlia

Dahlia variabilis

Zones 5–10· 369 saves
Dinnerplate Cutting Dahlia#2 most saved

Dinnerplate Cutting Dahlia

Dahlia pinnata 'Dinnerplate Cutting Blend'

Zones 5–10· 343 saves
Dahlia Mix#3 most saved

Dahlia Mix

Dahlia x hybrida 'Mix'

Zones 8–10· 60 saves· from $25
Hart Dahlia

Hart Dahlia

Dahlia variabilis 'Hart'

Zones 5–10· 60 saves
Garden Dahlia

Garden Dahlia

Dahlia spectabilis

Zones 8–10· 56 saves
Lady Darlene Dahlia

Lady Darlene Dahlia

Dahlia pinnata 'Lady Darlene'

Zones 5–9· 49 saves
Mrs. Eileen Dahlia

Mrs. Eileen Dahlia

Dahlia spectabilis 'Mrs Eileen'

Zones 5–10· 45 saves
Fashion Monger Dahlia

Fashion Monger Dahlia

Dahlia x cultorum 'Fashion Monger'

Zones 8–10· 42 saves
Dinnerplate Dahlia

Dinnerplate Dahlia

Dahlia x hybrida 'Dinnerplate Blend'

Zones 8–10· 42 saves
My Love Dahlia

My Love Dahlia

Dahlia variabilis 'My Love'

Zones 8–10· 39 saves
Bouquet Builder Dahlia

Bouquet Builder Dahlia

Dahlia dahlia 'Bouquet Builder's Dahlia Collection'

Zones 8–10· 35 saves
Surprise Dahlia

Surprise Dahlia

Dahlia variabilis 'Surprise'

Zones 8–10· 35 saves
Color Spectacle Dahlia

Color Spectacle Dahlia

Dahlia cactus 'Color Spectacle'

Zones 8–10· 34 saves
High Contrast Duo Dahlia

High Contrast Duo Dahlia

Dahlia pinnata 'High Contrast Duo'

Zones 8–10· 34 saves
Mixed Border Dahlia

Mixed Border Dahlia

Dahlia pinnata 'Mixed Border'

Zones 8–10· 34 saves
Bishop's Children Dahlia

Bishop's Children Dahlia

Dahlia x hybrida 'Bishop's Children'

Zones 8–10· 34 saves
Flashback Dahlia

Flashback Dahlia

Dahlia variabilis 'Flashback'

Zones 8–10· 32 saves
Jowey Gipsy Dahlia

Jowey Gipsy Dahlia

Dahlia pinnata 'Jowey Gipsy'

Zones 8–10· 30 saves
Labyrinth Dinnerplate Dahlia

Labyrinth Dinnerplate Dahlia

Dahlia variabilis 'Labyrinth Dinnerplate'

Zones 8–10· 27 saves
Café au Lait Dahlia

Café au Lait Dahlia

Dahlia x hybrida 'Café au Lait'

Zones 8–10· 22 saves
Scarlet Dahlia

Scarlet Dahlia

Dahlia coccinea 'True Wild Form'

Zones 8–10· 19 saves
Melody Allegro Dahlia

Melody Allegro Dahlia

Dahlia pinnata 'Melody Allegro'

Zones 8–10· 17 saves
Orange Dahlia

Orange Dahlia

Dahlia x hybrida 'Orange'

Zones 8–10· 15 saves
Melody Harmony Dahlia

Melody Harmony Dahlia

Dahlia variabilis 'Melody Harmony'

Zones 8–10· 14 saves

Showing the 24 most-saved of 118 Zone 9–hardy Dahlia varieties. See the full Dahlia list →

Dahlia in Zone 9

Will Dahlia survive a Zone 9 winter?

118 of the 126 Dahlia varieties in the Sow catalog are rated hardy through Zone 9, where winter lows reach 20°F to 30°F. Hardiness is per-variety, not per-genus — the plants listed above are the ones that hold up; others in the genus are not rated for this zone.

When should I plant Dahlia in Zone 9?

In Zone 9 the last spring frost typically lands around late February and the first fall frost around early December. Planting after the last frost — or in early fall, so roots establish before the ground cools — gives the best establishment. Each plant page lists its own planting months.

Which Dahlia is best for Zone 9?

Start at the top of the list above: it is ranked by how many gardeners actually save and grow each variety, which is a strong real-world reliability signal. Then narrow by your sun exposure and the mature size that fits the bed.

Keep exploring

See Dahlia in your Zone 9 yard

Snap a photo of your space and Sow places these varieties in it at true mature size — then keeps the care schedule for everything you plant.

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