Rock polypody
Polypodium virginianum
Zones 3-
8
3
USDA Hardiness Zone 3
-40 to -30°F • Extremely cold winter climates
Includes sub-zones: 3a, 3b | Ideal for: cold-hardy perennials, evergreens, conifers | 1851 total plants
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Rock soapwort
Saponaria ocymoides
Zones 2-
9
Rocky Mountain iris
Iris missouriensis
Zones 3-
8
Rocky Mountain juniper
Juniperus scopulorum 'Wichita Blue'
Zones 3-
7
Romanesco broccoli / cauliflower
Brassica oleracea (Botrytis Group)
Zones 2-
11
Rose moss
Portulaca grandiflora
Zones 2-
11
Rose peashrub
Caragana rosea
Zones 3-
8
Rosebay rhododendron
Rhododendron maximum
Zones 3-
7
Roseshell azalea
Rhododendron prinophyllum
Zones 3-
8
Rough meadow grass
Poa trivialis
Zones 3-
7
Round-leaved ragwort
Packera obovata
Zones 3-
8
Royal fern
Osmunda regalis
Zones 3-
9
Royal fern
Osmunda regalis var. Spectabilis
Zones 3-
9
Rugosa rose
Rosa rugosa
Zones 2-
7
Rupture-wort
Herniaria hirsuta
Zones 2-
9
Rush
Juncus tenuis
Zones 2-
9
Rush
Juncus 'Blue Dart'
Zones 2-
9
Russian arbor-vitae
Microbiota decussata
Zones 3-
7
Russian arborvitae
Microbiota decussata 'Prides' CELTIC PRIDE
Zones 2-
7
Russian olive
Elaeagnus angustifolia
Zones 3-
7
Russian stonecrop
Phedimus kamtschaticus
Zones 3-
8
Sage
Salvia 'Pink Dawn'
Zones 3-
8
Saussurea
Saussurea pulchella
Zones 3-
7
Savin juniper
Juniperus sabina 'Monard' MOOR-DENSE
Zones 3-
7
Savin juniper
Juniperus sabina 'Skandia'
Zones 3-
7
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Savin juniper
Juniperus sabina 'Mini Arcade'
Zones 3-
7
Savin juniper
Juniperus sabina
Zones 3-
7
Scallion
Allium fistulosum 'Evergreen'
Zones 3-
9
Scilla
Scilla bifolia 'Rosea'
Zones 3-
8
Scilla
Scilla bifolia
Zones 3-
8
Scotch pine
Pinus sylvestris 'Albyn Prostrata'
Zones 3-
7
Scotch pine
Pinus sylvestris 'Beuvronensis'
Zones 3-
7
Scotch pine
Pinus sylvestris 'Glauca Nana'
Zones 3-
7
Scotch pine
Pinus sylvestris 'Fastigiata'
Zones 3-
7
Scotch pine
Pinus sylvestris 'Hillside Creeper'
Zones 2-
8
Scotch pine
Pinus sylvestris 'Hindu-Pan'
Zones 3-
7
Scotch pine
Pinus sylvestris 'Nana Compressa'
Zones 3-
7
Scotch pine
Pinus sylvestris 'Repens'
Zones 3-
7
Scotch pine
Pinus sylvestris 'Watereri'
Zones 3-
7
Scotch pine
Pinus sylvestris 'Loose Park'
Zones 3-
7
Scotch pine
Pinus sylvestris 'Gold Coin'
Zones 3-
7
Scotch pine
Pinus sylvestris
Zones 2-
7
Sea buckthorn
Hippophae rhamnoides
Zones 3-
8
Sea lavender
Goniolimon incanum 'Blue Diamond'
Zones 3-
9
Sea lavender
Limonium platyphyllum
Zones 3-
9
Sedge
Carex pensylvanica
Zones 3-
8
Sedge
Carex pensylvanica 'Straw Hat'
Zones 3-
8
Serbian bellflower
Campanula poscharskyana 'Stella'
Zones 3-
8
Serbian bellflower
Campanula poscharskyana
Zones 3-
8
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Showy milkweed
Asclepias speciosa
Zones 3-
9
Showy stonecrop
Hylotelephium spectabile 'Meteor'
Zones 3-
9
Showy stonecrop
Hylotelephium spectabile 'Stardust'
Zones 3-
9
Shrub rose
Rosa glauca
Zones 2-
8
Shrubby cinquefoil
Potentilla fruticosa 'Abbotswood'
Zones 3-
7
Shrubby cinquefoil
Potentilla fruticosa 'Hallman Dwarf'
Zones 3-
7
Shrubby cinquefoil
Potentilla fruticosa
Zones 3-
7
Shrubby St. John's wort
Hypericum prolificum
Zones 3-
8
Siberian bugloss
Brunnera macrophylla
Zones 3-
8
Siberian bugloss
Brunnera macrophylla 'Langtrees'
Zones 3-
7
Siberian bugloss
Brunnera macrophylla 'Jack Frost'
Zones 3-
8
Siberian bugloss
Brunnera macrophylla 'Dawson's White'
Zones 3-
8
Siberian bugloss
Brunnera macrophylla 'Hadspen Cream'
Zones 3-
7
Siberian bugloss
Brunnera macrophylla 'Looking Glass'
Zones 3-
7
Siberian bugloss
Brunnera macrophylla 'Mr. Morse'
Zones 3-
7
Siberian bugloss
Brunnera macrophylla 'King's Ransom'
Zones 3-
8
Siberian bugloss
Brunnera macrophylla 'Sea Heart'
Zones 3-
9
Siberian bugloss
Brunnera macrophylla 'Alexander's Great'
Zones 3-
8
Siberian crabapple
Malus baccata 'Halward'
Zones 2-
7
Siberian crabapple
Malus mandshurica
Zones 2-
7
Siberian iris
Iris 'Steve Varner'
Zones 3-
8
Siberian iris
Iris 'Sparkle'
Zones 3-
8
Siberian iris
Iris 'Baby Sister'
Zones 3-
8
Siberian iris
Iris 'Butter and Sugar'
Zones 3-
8
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Siberian iris
Iris 'Gull's Wing'
Zones 3-
8
Siberian iris
Iris 'Illini Charm'
Zones 3-
8
Siberian iris
Iris 'Lady Vanessa'
Zones 3-
8
Siberian iris
Iris 'Caesar's Brother'
Zones 3-
8
Siberian iris
Iris 'Pink Haze'
Zones 3-
8
Siberian iris
Iris 'Dance Ballerina Dance'
Zones 3-
8
Siberian iris
Iris 'Orville Fay'
Zones 3-
8
Siberian iris
Iris 'Sally Kerlin'
Zones 3-
8
Siberian larkspur
Delphinium grandiflorum 'Blue Butterfly'
Zones 3-
7
Siberian peashrub
Caragana arborescens
Zones 2-
7
Siberian squill
Scilla siberica 'Spring Beauty'
Zones 2-
8
Siberian squill
Scilla siberica
Zones 2-
8
Sieber's crocus
Crocus sieberi subsp. Atticus 'Firefly'
Zones 3-
8
Silky lady's mantle
Alchemilla sericata 'Gold Strike'
Zones 3-
8
Silver birch
Betula pendula MAGICAL GLOBE
Zones 3-
6
Silver buffaloberry
Shepherdia argentea
Zones 3-
9
Silver maple
Acer saccharinum
Zones 3-
9
Silver speedwell
Veronica spicata subsp. Incana
Zones 3-
8
Silver willow
Salix alba var. Sericea
Zones 2-
8
Single late tulip
Tulipa 'Queen of Night'
Zones 3-
8
Skyblue aster
Symphyotrichum oolentangiense
Zones 3-
8
Slenderleaf false foxglove
Agalinis tenuifolia
Zones 2-
11
Small globe thistle
Echinops ritro 'Veitch's Blue'
Zones 3-
8
Small globe thistle
Echinops ritro
Zones 3-
8
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Small-cupped daffodil
Narcissus 'After All'
Zones 3-
8
Small-cupped daffodil
Narcissus 'Copper Coin'
Zones 3-
8
Small-cupped daffodil
Narcissus 'Green Pearl'
Zones 3-
8
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View all 1851 plants for Zone 3 with advanced filtering options. Search by plant type, sun exposure, water needs, and more.
See All PlantsBest Plants for Zone 3
USDA Hardiness Zone 3 experiences winter minimum temperatures between -40 to -30°F. This collection includes 1851 plants specifically suited for Zone 3 conditions, including cold-hardy perennials, evergreens, conifers.
Understanding Your Hardiness Zone
The USDA hardiness zone is based on average annual minimum winter temperature. While it's an excellent starting point, also consider your local microclimate, soil conditions, rainfall patterns, and summer heat when selecting plants.