Before shopping for plants based on your USDA Plant Hardiness Zone, please read our in-depth article about Plant Hardiness Zone Maps to understand their uses and their limitations.
Use the official USDA Hardiness Zone Map to determine your zone by zip code.
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Helleborus x hybridus 'Sun Flare'
Item #: 14317
Zones: 4a to 8b
Dormancy: Evergreen
Height: 15" tall
Culture: Part Sun to Light Shade
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $30.00Regular priceUnit price perNext crop available: 10/04/2024Sold out -
Allium 'Millenium'
Item #: 5466
Zones: 5a to 8b, at least
Dormancy: Winter
Height: 12" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $20.00Regular priceUnit price per -
Perovskia atriplicifolia 'Blue Jean Baby' PP 29,281
Item #: 13502
Zones: 4a to 8b, possibly colder
Dormancy: Winter
Height: 34" tall
Culture: Sun
Origin: Afghanistan, China, Himalayan Mountains, Pakistan, Turkey
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Spigelia marilandica 'Ragin Cajun'
Item #: 8718
Zones: 5a to 9b
Dormancy: Winter
Height: 20" tall
Culture: Sun to Light Shade
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $28.00Regular priceUnit price per -
Dryopteris sieboldii
Item #: 1836
Zones: 6a to 9b
Dormancy: Evergreen
Height: 15" tall
Culture: Part Sun to Shade
Origin: China, Japan, Taiwan
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
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Ligularia japonica 'Chinese Dragon'
Item #: 9018
Zones: 4a to 8b, at least
Dormancy: Winter
Height: 36" tall
Culture: Part Sun to Light Shade
Origin: China
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $26.00Regular priceUnit price perNext crop available: 06/14/2024Sold out -
Clematis 'Stand by Me' PP 30,556
Item #: 13500
Zones: 3b to 8b
Dormancy: Winter
Height: 36" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $28.00Regular priceUnit price per -
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Buddleia 'Evil Ways'
Item #: 7905
Zones: 5a to 9b
Dormancy: Winter
Height: 48" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3 qt. (2.8 L)
Regular price $29.00Regular priceUnit price perNext crop available: 05/03/2024Sold out -
Baptisia 'Lemon Meringue' PP 24,280
Item #: 9453
Zones: 4a to 9b
Dormancy: Winter
Height: 36" tall
Culture: Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $24.00Regular priceUnit price per -
Clematis 'Sapphire Indigo' PP 17,012
Item #: 8947
Zones: 4a to 8b
Dormancy: Winter
Height: 18" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $28.00Regular priceUnit price per -
Hibiscus 'Perfect Storm' PP 27,880
Item #: 11951
Zones: 4a to 9b
Dormancy: Winter
Height: 36" tall
Culture: Sun to Part Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $25.00Regular priceUnit price per -
Hibiscus 'Airbrush Effect' PP 29,295
Item #: 13757
Zones: 4a to 9b
Dormancy: Winter
Height: 48" tall
Culture: Sun to Part Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $25.00Regular priceUnit price per -
Schizachyrium scoparium 'Twilight Zone' PP 27,432
Item #: 13509
Zones: 3a to 8b
Dormancy: Winter
Height: 36" tall
Culture: Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $24.00Regular priceUnit price perNext crop available: 05/24/2024Sold out -
Baptisia 'Grape Taffy' PP 26,587
Item #: 11293
Zones: 4a to 9b
Dormancy: Winter
Height: 30" tall
Culture: Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $24.00Regular priceUnit price per -
Agastache 'Blue Fortune'
Item #: 3209
Zones: 3a to 9b
Dormancy: Winter
Height: 36" tall
Culture: Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $20.00Regular priceUnit price per -
Alstroemeria 'The Third Harmonic'
Item #: 4160
Zones: 6a to 9b, at least
Dormancy: Winter
Height: 48" tall
Culture: Sun to Part Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $29.00Regular priceUnit price per -
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Baptisia 'Pink Truffles' PP 26,588
Item #: 10754
Zones: 4a to 9b
Dormancy: Winter
Height: 30" tall
Culture: Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $24.00Regular priceUnit price perSold out -
Sarracenia leucophylla 'Tarnok'
Item #: 4339
Zones: 5a to 9b
Dormancy: Winter
Height: 24" tall
Culture: Sun to Part Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $32.00Regular priceUnit price per -
Hibiscus 'Berry Awesome' PP 27,936
Item #: 11950
Zones: 4a to 9b
Dormancy: Winter
Height: 48" tall
Culture: Sun to Part Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $25.00Regular priceUnit price per -
Myosotis palustris 'Southern Blues'
Item #: 1427
Zones: 4a to 8b
Dormancy: Evergreen
Height: 6" tall
Culture: Part Sun to Light Shade
Origin: Europe
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $20.00Regular priceUnit price per -
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Aralia cordata 'Sun King'
Item #: 9133
Zones: 4a to 8b, at least
Dormancy: Winter
Height: 72" tall
Culture: Part Sun to Light Shade
Origin: Japan
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price perNext crop available: 05/31/2024Sold out -
Hosta 'Stained Glass'
Item #: 4232
Zones: 3a to 9b
Dormancy: Winter
Height: 15" tall
Culture: Part Sun to Light Shade
Origin: Hybrid
Pot Size: 3 qt. (2.8 L)
Regular price $30.00Regular priceUnit price per -
Achillea 'Strawberry Seduction' PP 18,401
Item #: 9200
Zones: 3a to 8b
Dormancy: Winter
Height: 24" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $20.00Regular priceUnit price per -
Epimedium 'Amber Queen' PP 17,197
Item #: 8191
Zones: 5a to 8b, at least
Dormancy: Winter
Height: 24" tall
Culture: Part Sun to Light Shade
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $32.00Regular priceUnit price per
More Information About Plants for Zone 6
Zone 6a and Zone 6b Plants
Many of the perennial plants in our catalog are well-suited for Zones 6a or 6b. Some of our favorite species of acanthus, achillea, agapanthus, agastache, baptisia, brunnera, buddleia, carex, chrysanthemum, coreopsis, delosperma, dentaria, dianthus, echinacea, epimedium, euphorbia, geranium, heuchera, hosta, kniphofia, lilium, lycoris, monarda, paeonia, phlox, polygonatum, podophyllum, rohdea, salvia, solidago and more can survive Zone 4 winter temperatures. Be sure to read how we assign hardiness zones to our plants.
The current USDA Plant Hardiness Zone Map was last updated in 2012 and is based on the average annual minimum winter temperature, divided into 10-degree F zones. Each zone is then subdivided into 5-degree F sub-zones. Zone numbers increase as you move from north to south.
Zone 6a annual minimum winter temperatures should be -10 to -5 °F (-23.3 to -20.6 °C). Zone 6b annual minimum temperatures should be -5 to 0 °F (-20.6 to -17.8 °C). Keep in mind that the zone designation does not tell you how many days the area may reach those average minimums. There can also be a major difference between what plants will grow in the 'a' or 'b' sub-zones.