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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Liriope gracilis 'Mop Top'
Item #: 11801
Zones: 6a to 9b, guessing
Dormancy: Evergreen
Height: 15" tall
Culture: Part Sun to Light Shade
Origin: China
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $25.00Regular priceUnit price per
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Carex bromoides
Item #: 12439
Zones: 4a to 8b, at least
Dormancy: Winter
Height: 6" tall
Culture: Sun to Shade
Origin: Canada, United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Sold outEpimedium grandiflorum 'Dark Beauty'
Item #: 6231
Zones: 4a to 8b
Dormancy: Winter
Height: 12" tall
Culture: Part Sun to Light Shade
Origin: Japan
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $30.00Regular priceUnit price per -
Dryopteris nipponensis
Item #: 5152
Zones: 6a to 9b, possibly colder
Dormancy: Evergreen
Height: 24" tall
Culture: Part Sun to Light Shade
Origin: Japan, Korea
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Cyclamen hederifolium 'Silver Tongued Devil'
Item #: 9011
Zones: 4a to 8b
Dormancy: Spring, Summer
Height: 3" tall
Culture: Part Sun to Light Shade
Origin: Southern Europe
Pot Size: 2.5" pot (7.9 fl. oz/233 ml)
Regular price $23.00Regular priceUnit price per -
Helleborus x glandorfensis 'Ice n' Roses Picotee' PP 31,184
Item #: 15878
Zones: 5a to 8b, at least
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 $29.00Regular priceUnit price per -
Solidago rugosa 'Fireworks'
Item #: 1032
Zones: 5a to 9b
Dormancy: Winter
Height: 40" 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 -
Festuca arundinacea 'Glow Sticks' PP 34,648
Item #: 17053
Zones: 3a to 8a
Dormancy: Evergreen
Height: 24" tall
Culture: Sun
Origin: Europe
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per
Sold out -
Iris cristata 'Eco White Angel'
Item #: 6995
Zones: 3a to 8b
Dormancy: Winter
Height: 6" tall
Culture: Part Sun to Light Shade
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $25.00Regular priceUnit price per -
Cardamine quinquefolia
Item #: 10148
Zones: 6a to 8b, guessing
Dormancy: Summer, Fall
Height: 6" tall
Culture: Part Sun to Light Shade
Origin: Asia Minor, Bulgaria, Caucasus Mountains, Iran, Southern Europe, Turkey
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Hosta 'Dressed to Kill'
Item #: 13039
Zones: 3a to 8b
Dormancy: Winter
Height: 12" tall
Culture: Light Shade
Origin: Hybrid
Pot Size: 3 qt. (2.8 L)
Regular price $35.00Regular priceUnit price per -
Echinacea purpurea 'Pica Bella'
Item #: 16935
Zones: 4a to 9b
Dormancy: Winter
Height: 32" tall
Culture: Sun to Part Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Veronica 'Wizard of Ahhs' PP 31,044
Item #: 16672
Zones: 3a to 8a
Dormancy: Winter
Height: 16" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Acorus gramineus 'Ogon'
Item #: 369
Zones: 5a to 9b
Dormancy: Evergreen
Height: 12" tall
Culture: Part Sun to Light Shade
Origin: China, Japan
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Erysimum pulchellum
Item #: 15375
Zones: 6a to 8a, at least
Dormancy: Evergreen
Height: 2" tall
Culture: Sun
Origin: Armenia, Iran, Turkey
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Lobelia cardinalis 'Towering Inferno'
Item #: 16741
Zones: 3a to 9b
Dormancy: Evergreen
Height: 84" tall
Culture: Sun to Light Shade
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Cyrtomium fortunei 'Ulleung Island'
Item #: 4278
Zones: 6a to 9b, at least
Dormancy: Evergreen
Height: 20" tall
Culture: Part Sun to Shade
Origin: Korea
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per -
Chelone glabra 'Black Ace'
Item #: 3746
Zones: 3a to 8b
Dormancy: Winter
Height: 72" tall
Culture: Sun to Part Sun
Origin: Canada, United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Eupatorium fistulosum
Item #: 1444
Zones: 4a to 8b
Dormancy: Winter
Height: 144" tall
Culture: Sun to Part Sun
Origin: United States
Pot Size: 2 qt. (1.9 L)
Regular price $25.00Regular priceUnit price per -
Sold outHelleborus x hybridus 'Onyx Odyssey'
Item #: 8882
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 $29.00Regular priceUnit price per -
Sold outHepatica acutiloba 'Monroe Shocks'
Item #: 11737
Zones: 6a to 9b, possibly much colder
Dormancy: Evergreen
Height: 4" tall
Culture: Light Shade
Origin: United States
Pot Size: 2.5" pot (7.9 fl. oz/233 ml)
Regular price $24.00Regular priceUnit price per -
Lobelia angulata
Item #: 790
Zones: 6a to 10b, possibly colder
Dormancy: Winter
Height: 1" tall
Culture: Sun to Light Shade
Origin: New Zealand
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $20.00Regular priceUnit price per -
Hosta 'Sum and Substance'
Item #: 1102
Zones: 3a to 8b
Dormancy: Winter
Height: 20" tall
Culture: Part Sun to Light Shade
Origin: Hybrid
Pot Size: 3 qt. (2.8 L)
Regular price $29.00Regular priceUnit price per -
Sold outAthyrium 'Silver Sentry'
Item #: 5208
Zones: 4a to 9b
Dormancy: Winter
Height: 54" tall
Culture: Part Sun to Light Shade
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular 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 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.