Perennial Plants for USDA Hardiness Zones 4a and 4b.
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 -
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 -
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 -
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 -
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 -
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 -
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 -
Athyrium 'Ghost'
Item #: 3881
Zones: 3a to 8b
Dormancy: Winter
Height: 30" 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 -
Dicentra spectabilis 'Valentine' PP 22,739
Item #: 9243
Zones: 3a to 8b
Dormancy: Winter, Summer, Fall
Height: 24" tall
Culture: Part Sun to Light Shade
Origin: China, Korea
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $22.00Regular priceUnit price per -
Helleborus x hybridus 'Ice and Fire'
Item #: 15000
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 per -
Hibiscus 'Starry Starry Night' PP 27,901
Item #: 11952
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 -
Penstemon 'Blackbeard' PP 30,052
Item #: 12732
Zones: 3a to 8b
Dormancy: Evergreen
Height: 30" 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 'Holy Grail' PP 31,478
Item #: 13759
Zones: 4a to 9b
Dormancy: Winter
Height: 54" 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 -
Pulmonaria 'Trevi Fountain'
Item #: 4872
Zones: 3a to 8b
Dormancy: Evergreen
Height: 11" tall
Culture: Part Sun to Light Shade
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Adiantum pedatum
Item #: 320
Zones: 3a to 8b
Dormancy: Winter
Height: 24" tall
Culture: Part Sun to Light Shade
Origin: Canada, United States
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $23.00Regular priceUnit price per -
Campanula poscharskyana 'Camgood'
Item #: 8037
Zones: 4a to 7b
Dormancy: Evergreen
Height: 8" tall
Culture: Part Sun to Light Shade
Origin: Balkans
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $21.00Regular priceUnit price per -
Helleborus x hybridus 'Blushing Bridesmaid'
Item #: 13122
Zones: 4a to 8b
Dormancy: Evergreen
Height: 18" tall
Culture: Part Sun to Light Shade
Origin: Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $27.00Regular priceUnit price per -
Ajuga tenorei 'Cordial Canary' PPAF
Item #: 16734
Zones: 4a to 9b
Dormancy: Evergreen
Height: 3" tall
Culture: Part Sun to Light Shade
Origin: Italy
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $19.00Regular priceUnit price per -
Euphorbia corollata 'Carolina Snow'
Item #: 4316
Zones: 3a to 9b
Dormancy: Winter
Height: 18" 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 -
Lobelia cardinalis
Item #: 22
Zones: 3a to 9b
Dormancy: Evergreen
Height: 60" 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 -
Hosta 'Empress Wu' PP 20,774
Item #: 2863
Zones: 3a to 8b
Dormancy: Winter
Height: 48" tall
Culture: Part Sun to Light Shade
Origin: Hybrid
Pot Size: 3 qt. (2.8 L)
Regular price $30.00Regular priceUnit price per -
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Baptisia 'Ivory Towers' PP 26,827
Item #: 8738
Zones: 4a to 9b, at least
Dormancy: Winter
Height: 60" tall
Culture: Sun
Origin: United States Hybrid
Pot Size: 3.5" pot (24 fl. oz/0.7 L)
Regular price $25.00Regular priceUnit price perSold out -
Helleborus x hybridus 'Golden Lotus'
Item #: 8474
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
More Information About Plants for Zone 4
Zone 4a and Zone 4b Plants
Many of the perennial plants in our catalog are well-suited for Zones 4a or 4b. Some of our favorite species of ajuga, arum, aster, athyrium, baptisia, carex, clematis, cylcamen, cypripedium, dryopteris, echinacea, helleborus, hemerocallis, heuchera, hibiscus, hosta, lycoris, monarda, paeonia, penstemon, polygonatum, 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 4a annual minimum winter temperatures should be -30 to -25 °F (-34.4 to -31.7 °C). Zone 4b annual minimum temperatures should be -25 to -20 °F (-31.7 to -28.9 °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.