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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Asarum splendens
Item #: 720
Zones: 5a to 9b
Dormancy: Evergreen
Height: 6" tall
Culture: Light Shade to Shade
Origin: China
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per -
Sold outKniphofia 'Lola'
Item #: 4345
Zones: 6a to 10b, guessing
Dormancy: Evergreen
Height: 84" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $30.00Regular priceUnit price per -
Ajuga reptans 'Texas Tough'
Item #: 12990
Zones: 3a to 9b, at least
Dormancy: Evergreen
Height: 4" tall
Culture: Sun to Light Shade
Origin: Europe
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $19.00Regular priceUnit price per -
Rubus pentalobus 'Emerald Carpet'
Item #: 729
Zones: 6a to 9b
Dormancy: Evergreen
Height: 6" tall
Culture: Sun to Part Sun
Origin: Taiwan
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $16.80Regular priceUnit price per$21.00Sale price $16.80Sale -
Hosta 'Liberty'
Item #: 4736
Zones: 3a to 8b
Dormancy: Winter
Height: 24" tall
Culture: Part Sun to Light Shade
Origin: Hybrid
Pot Size: 2 qt. (1.9 L)
Regular price $35.00Regular priceUnit price per
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Echinacea 'Kismet Raspberry' PP 28,768
Item #: 14360
Zones: 4a to 9b
Dormancy: Winter
Height: 18" tall
Culture: Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Penstemon 'Dark Towers' PP 20,013
Item #: 8907
Zones: 3a to 8b
Dormancy: Evergreen
Height: 24" tall
Culture: Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Hibiscus coccineus
Item #: 1215
Zones: 6a to 9b
Dormancy: Winter
Height: 96" tall
Culture: Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $25.00Regular priceUnit price per -
Ajuga 'Parrot Paradise'
Item #: 16733
Zones: 4a to 9b
Dormancy: Evergreen
Height: 3" tall
Culture: Part Sun to Light Shade
Origin: Europe, Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $15.20Regular priceUnit price per$19.00Sale price $15.20
Sale -
Rudbeckia maxima
Item #: 355
Zones: 4a to 9b
Dormancy: Winter
Height: 80" tall
Culture: Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Vernonia lettermanii
Item #: 6670
Zones: 4a to 9b
Dormancy: Winter
Height: 24" tall
Culture: Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Baptisia 'Blue Bunchkin'
Item #: 11848
Zones: 4a to 9b, at least
Dormancy: Winter
Height: 42" tall
Culture: Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $25.00Regular priceUnit price per -
Pycnanthemum tenuifolium 'Campbell Carpet'
Item #: 12812
Zones: 6a to 8b, at least
Dormancy: Winter
Height: 18" tall
Culture: Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $17.60Regular priceUnit price per$22.00Sale price $17.60Sale -
Lespedeza thunbergii 'Gibraltar'
Item #: 2003
Zones: 4a to 9b
Dormancy: Winter
Height: 72" tall
Culture: Sun to Part Sun
Origin: Japan
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.60Regular priceUnit price per$27.00Sale price $21.60Sale -
Sold outCardiocrinum giganteum
Item #: 9310
Zones: 6a to 8b
Dormancy: Winter
Height: 96" tall
Culture: Part Sun to Light Shade
Origin: China, Himalayan Mountains
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $29.00Regular priceUnit price per -
Cypripedium kentuckiense
Item #: 8931
Zones: 3a to 8b
Dormancy: Winter, Fall
Height: 18" tall
Culture: Part Sun to Light Shade
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $80.00Regular priceUnit price per$100.00Sale price $80.00Sale -
Echinacea 'Salsa Red' PP 23,105
Item #: 9785
Zones: 4a to 9b
Dormancy: Winter
Height: 24" tall
Culture: Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Sold outHosta rectifolia 'Mito-no-hana'
Item #: 10465
Zones: 3a to 8b
Dormancy: Winter
Height: 15" tall
Culture: Light Shade
Origin: Japan
Pot Size: 2 qt. (1.9 L)
Regular price $100.00Regular priceUnit price per -
Sold outBletilla striata 'Soryu'
Item #: 8131
Zones: 6a to 9b
Dormancy: Winter
Height: 24" tall
Culture: Part Sun
Origin: Burma/Myanmar, China, Japan, Korea
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $39.00Regular priceUnit price per -
Sold outArisaema ringens
Item #: 2531
Zones: 5a to 9b
Dormancy: Winter, Fall
Height: 24" tall
Culture: Part Sun to Light Shade
Origin: China, Japan, Korea
Pot Size: Bare Root / 3.5" pot (24 fl. oz/0.7 L)
Regular price $30.00Regular priceUnit price per -
Solidago sphacelata 'Golden Fleece'
Item #: 734
Zones: 4a to 9b
Dormancy: Winter
Height: 20" tall
Culture: Sun to Part Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Boehmeria nivea 'Solar Eclipse'
Item #: 10644
Zones: 6a to 9b
Dormancy: Winter
Height: 36" 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 per -
Allium kiiense
Item #: 3352
Zones: 5a to 9b, at least
Dormancy: Evergreen
Height: 6" tall
Culture: Sun to Part Sun
Origin: Japan
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per -
Pardancanda norrisii 'Wine and Yellow Roses'
Item #: 9768
Zones: 5a to 9b
Dormancy: Winter
Height: 36" tall
Culture: Sun to Part Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $20.00Regular priceUnit price per$25.00Sale price $20.00Sale
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 USDA Plant Hardiness Zone Map 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.