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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Echinacea 'Pretty Parasols' PP 31,675
Item #: 17893
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 $22.00Regular priceUnit price per -
Sarracenia 'Blood Orange'
Item #: 11386
Zones: 5a to 9b
Dormancy: Winter
Height: 24" tall
Culture: Sun to Part Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $45.00Regular priceUnit price per -
Sold outPeltandra virginica 'Purplicious'
Item #: 12164
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 $27.00Regular priceUnit price per
Next crop available: 06/19/2026Sold out -
Liatris aspera 'Bastrop'
Item #: 17254
Zones: 4a to 9b
Dormancy: Winter
Height: 36" tall
Culture: Sun to Part Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Stellaria pubera 'Chick-a-boom'
Item #: 16629
Zones: 6a to 9a, at least
Dormancy: Evergreen
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 $22.00Regular priceUnit price per -
Helleborus x hybridus 'Black Diamond'
Item #: 4471
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 outBlephilia ciliata
Item #: 17371
Zones: 4a to 8b, at least
Dormancy: Winter
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 $21.00Regular priceUnit price per -
Sold outCypripedium 'Philipp Dark'
Item #: 17079
Zones: 4a to 7b, at least
Dormancy: Winter, Fall
Height: 24" tall
Culture: Part Sun to Light Shade
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $95.00Regular priceUnit price per -
Caryopteris x clandonensis 'Blue Empire' PP 30,494
Item #: 17594
Zones: 5a to 9b
Dormancy: Winter
Height: 72" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per -
Engelmannia peristenia 'Bergheim'
Item #: 8775
Zones: 5a to 10b, at least
Dormancy: Winter
Height: 24" tall
Culture: Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per -
Eupatorium purpureum 'Baby Joe' PP 20,320
Item #: 9664
Zones: 4a to 8b, at least
Dormancy: Winter
Height: 36" tall
Culture: Sun to Part Sun
Origin: Canada, United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $25.00Regular priceUnit price per -
Uvularia grandiflora
Item #: 1754
Zones: 3a to 9b
Dormancy: Winter
Height: 18" tall
Culture: Part Sun to Shade
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per -
Callirhoe involucrata var. lineariloba 'Logan Calhoun'
Item #: 4124
Zones: 4a to 9b
Dormancy: Winter
Height: 12" tall
Culture: Sun
Origin: United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Selaginella borealis
Item #: 5120
Zones: 3a to 8b, at least
Dormancy: Evergreen
Height: 2" tall
Culture: Part Sun to Light Shade
Origin: Japan
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $26.00Regular priceUnit price per -
Epimedium 'Lyrical Lemonade'
Item #: 16678
Zones: 5a to 8b, guessing
Dormancy: Winter
Height: 16" 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 -
Acanthus mollis 'Rue Ledan'
Item #: 4732
Zones: 6a to 8a
Dormancy: Winter
Height: 20" tall
Culture: Part Sun to Light Shade
Origin: Northern Africa, Southwest Europe
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $27.00Regular priceUnit price per -
Iris x robusta 'Gerald Darby'
Item #: 1708
Zones: 4a to 9b, at least
Dormancy: Winter
Height: 24" tall
Culture: Sun to Light Shade
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $28.00Regular priceUnit price per -
Lycoris x flaveri 'Orange Glow'
Item #: 18389
Zones: 4a to 7b, guessing
Dormancy: Summer
Height: 24" tall
Culture: Sun to Light Shade
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $32.00Regular priceUnit price per -
Athyrium 'Ocean's Fury' PP 20,126
Item #: 7817
Zones: 3a to 9b
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 $25.00Regular priceUnit price per -
Sold outHelleborus niger 'Mont Blanc'
Item #: 16513
Zones: 3a to 7b
Dormancy: Evergreen
Height: 12" tall
Culture: Part Sun to Shade
Origin: Europe
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $29.00Regular priceUnit price per -
Sold outDystaenia takesimana
Item #: 17252
Zones: 4a to 8b, at least
Dormancy: Evergreen
Height: 48" tall
Culture: Sun to Part Sun
Origin: Korea
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Sold outPaeonia 'Do Tell'
Item #: 17030
Zones: 4a to 8b
Dormancy: Winter
Height: 32" tall
Culture: Sun
Origin: Hybrid
Pot Size: 3 qt. (2.8 L)
Regular price $34.00Regular priceUnit price per -
Sold outHelleborus x hybridus 'Blue Diamond'
Item #: 17521
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 outCypripedium 'Sabine Pastel'
Item #: 9607
Zones: 5a to 7b, at least
Dormancy: Winter, Fall
Height: 18" tall
Culture: Part Sun to Light Shade
Origin: China
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $110.00Regular 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.