26 Cold-Hardy Encore® Azaleas

Learn what Encore® Azalea varieties are cold hardy and what zones they work best...

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For more than 20 years, Encore Azaleas have been tested in gardens, trials, and plant nurseries across the Southeast and have proven to be low-maintenance solutions for multi-season landscape color.

University studies and extensive plantings throughout the Midwest and Northeast also show that many varieties are cold hardy through USDA zone 6.

Seventeen Encore Azalea varieties consistently exhibited solid cold hardiness through Zone 6.

Intermediate

Autumn Amethyst®

Rhododendron ‘Conlee’ PP10567

USDA Zones 6a - 10b

Dwarf

Autumn Bonfire®

Rhododendron ‘Robleza’ PPAF

USDA Zones 6a - 10b

Intermediate

Autumn Bravo®

Rhododendron ‘Conlen’ PP11628

USDA Zones 6b - 10b

Intermediate

Autumn Carnation®

Rhododendron ‘Roblec’ PP15339

USDA Zones 6a - 10b

Dwarf

Autumn Cheer®

Rhododendron ‘Conlef’ PP10579

USDA Zones 6a - 10b

Intermediate

Autumn Debutante®

Rhododendron ‘Roblel’ PP16278

USDA Zones 6b - 10b

Dwarf

Autumn Embers®

Rhododendron ‘Conleb’ PP10581

USDA Zones 6b - 10b

Intermediate

Autumn Empress™

Rhododendron ‘Conles’ PP12109

USDA Zones 6b - 10b

Dwarf

Autumn Fire®

Rhododendron ‘Roblez’ PP28279

USDA Zones 6a - 10b

Intermediate

Autumn Jewel®

Rhododendron 'Robleu' PP25074

USDA Zones 6a - 10b

Dwarf

Autumn Lilac®

Rhododendron 'Robles' PP22762

USDA Zones 6a - 10b

Intermediate

Autumn Lily®

Rhododendron 'Roblex' PP25073

USDA Zones 6a - 10b

Dwarf

Autumn Majesty®

Rhododendron ‘Roblezd’ PP32967

USDA Zones 6a - 10b

Intermediate

Autumn Monarch™

Rhododendron ‘Conleo’ PP11640

USDA Zones 6b - 10b

Dwarf

Autumn Princess®

Rhododendron ‘Roblea’ PP12142

USDA Zones 6b - 10b

Intermediate

Autumn Rouge®

Rhododendron ‘Conlea’ PP10438

USDA Zones 6b - 10b

Intermediate

Autumn Royalty®

Rhododendron ‘Conlec’ PP10580

USDA Zones 6a - 10b

Dwarf

Autumn Ruby®

Rhododendron ‘Conler’ PP12110

USDA Zones 6a - 10b

In Zone 6B, 9 additional varieties consistently exhibited solid cold hardiness:

Intermediate

Autumn Bravo®

Rhododendron ‘Conlen’ PP11628

USDA Zones 6b - 10b

Intermediate

Autumn Debutante®

Rhododendron ‘Roblel’ PP16278

USDA Zones 6b - 10b

Dwarf

Autumn Embers®

Rhododendron ‘Conleb’ PP10581

USDA Zones 6b - 10b

Intermediate

Autumn Monarch™

Rhododendron ‘Conleo’ PP11640

USDA Zones 6b - 10b

Dwarf

Autumn Princess®

Rhododendron ‘Roblea’ PP12142

USDA Zones 6b - 10b

Intermediate

Autumn Rouge®

Rhododendron ‘Conlea’ PP10438

USDA Zones 6b - 10b

Dwarf

Autumn Starburst®

Rhododendron ‘Robleze’ PP32506

USDA Zones 6a - 10b

Intermediate

Autumn Sweetheart®

Rhododendron ‘Robleja’ PP16249

USDA Zones 6b - 10b

Great for Container Gardening:

Encore Azaleas may need special care in zones colder than Zone 6A, but their multi-season blooming capability makes them ideal for container gardens.

As a base plant in a container garden, Encore Azaleas can be paired with seasonal favorites and moved inside when winter freezes threaten.

Learn more about container gardening with Encore® Azaleas, click here.

To learn more about planting for success in Zones 6A and 6B, click here.

For more garden ideas, click here.

To browse the full Encore Azalea collection, click here.

Encore Azalea is the best azalea you’ll ever plant. Encore Azaleas are the world’s best-selling re-blooming azalea with rich, colorful blooms in spring, summer and fall. Encore Azaleas have 33 varieties of bloom colors and sizes to choose from and thrive equally well in high filtered shade or sunny locations—unlike any other azalea in the world. Find a retailer near you at encoreazalea.com.

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