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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Clematis 'Rooguchi'
Item #: 7093
Zones: 3a to 8b
Dormancy: Winter
Height: 72" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $28.00Regular priceUnit price per -
Dryopteris x australis
Item #: 3546
Zones: 5a to 9b
Dormancy: Evergreen
Height: 50" tall
Culture: Part Sun to Light Shade
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per
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Polygonatum odoratum 'Angel Wing' PP 21,543
Item #: 3167
Zones: 4a to 9b
Dormancy: Winter
Height: 18" tall
Culture: Part Sun to Light Shade
Origin: China, Japan, Korea
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $36.00Regular priceUnit price per -
Buddleia 'Grand Cascade' PP 30,868
Item #: 13263
Zones: 5a to 9b
Dormancy: Winter
Height: 66" tall
Culture: Sun
Origin: Hybrid
Pot Size: 2 qt. (1.9 L)
Regular price $30.00Regular priceUnit price per -
Helleborus x iburgensis 'Anna's Red' PP 24,720
Item #: 2353
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 -
Gentiana 'True Blue' PP 20,433
Item #: 8505
Zones: 4a to 8b
Dormancy: Winter
Height: 18" tall
Culture: Sun to Part Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $24.00Regular priceUnit price per -
Amorphophallus konjac
Item #: 783
Zones: 6a to 10b
Dormancy: Winter, Spring
Height: 60" tall
Culture: Part Sun to Light Shade
Origin: China
Pot Size: Bare Root / 3.5" pot (24 fl. oz/0.7 L)
Regular price $29.00Regular priceUnit price per -
Begonia grandis 'Pink Teardrops'
Item #: 11863
Zones: 5a to 9b
Dormancy: Winter
Height: 24" tall
Culture: Part Sun to Shade
Origin: China
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per
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Lilium formosanum Giant Form
Item #: 1356
Zones: 6a to 10a, at least
Dormancy: Winter, Fall
Height: 84" tall
Culture: Sun
Origin: Taiwan
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per -
Spigelia marilandica 'Little Redhead'
Item #: 6866
Zones: 5b to 9b
Dormancy: Winter
Height: 21" 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 -
Acanthus 'Summer Beauty'
Item #: 2526
Zones: 6a to 8b, at least
Dormancy: Winter
Height: 30" tall
Culture: Part Sun to Shade
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $27.00Regular priceUnit price per -
Brunnera macrophylla 'Alexander's Great' PP 25,789
Item #: 6251
Zones: 3a to 7b
Dormancy: Winter
Height: 15" tall
Culture: Part Sun to Light Shade
Origin: Mediterranean Europe
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Sold outAntirrhinum hispanicum
Item #: 8364
Zones: 5a to 8b
Dormancy: Evergreen
Height: 12" tall
Culture: Sun
Origin: Morocco, Spain
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Carex oshimensis 'Everillo' PP 21,002
Item #: 9802
Zones: 5a to 9b
Dormancy: Evergreen
Height: 12" 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 -
Chrysanthemum 'Matchsticks'
Item #: 9263
Zones: 5a to 8b
Dormancy: Winter
Height: 24" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Sold outTrillium underwoodii
Item #: 2973
Zones: 6a to 9b
Dormancy: Summer, Fall
Height: 8" tall
Culture: Part Sun to Light Shade
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $30.00Regular priceUnit price per -
Sarracenia x moorei 'Conversation Piece'
Item #: 8350
Zones: 5a to 9b
Dormancy: Winter
Height: 28" tall
Culture: Sun to Part Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $35.00Regular priceUnit price per -
Sanguinaria canadensis 'Multiplex'
Item #: 2688
Zones: 4a to 8b
Dormancy: Winter, Summer, Fall
Height: 6" tall
Culture: Light Shade to Shade
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $32.00Regular priceUnit price per -
Athyrium 'Godzilla'
Item #: 8169
Zones: 5a to 8b
Dormancy: Winter
Height: 36" tall
Culture: Part Sun to Light Shade
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per -
Asclepias incarnata 'Cinderella'
Item #: 388
Zones: 3a to 9b
Dormancy: Winter
Height: 50" tall
Culture: Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Paeonia 'Bartzella'
Item #: 7187
Zones: 4a to 8b, at least
Dormancy: Winter
Height: 36" tall
Culture: Sun to Part Sun
Origin: Hybrid
Pot Size: 1.6 gal. (6 L)
Regular price $75.00Regular priceUnit price per -
Hibiscus 'Midnight Marvel' PP 24,079
Item #: 1781
Zones: 5a to 8b, at least
Dormancy: Winter
Height: 60" 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 -
Alcea rugosa
Item #: 4469
Zones: 3a to 8a
Dormancy: Winter
Height: 72" tall
Culture: Sun
Origin: Russia, Ukraine
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Salvia microphylla 'Hot Lips'
Item #: 5424
Zones: 6a to 9b
Dormancy: Evergreen
Height: 30" tall
Culture: Sun
Origin: Mexico
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular 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.