Smooth aster
Symphyotrichum laeve
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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Smooth hydrangea
Hydrangea arborescens 'Annabelle'
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'Grandiflora'
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'Ryan Gainey'
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'NCHA1' INVINCIBELLE SPIRIT
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'Abetwo' INCREDIBALL
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'NCHA2' INVINCIBELLE SPIRIT II
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'NCHA4' INCREDIBALL BLUSH
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'SMHAMWM' SEASIDE SERENADE BAR HARBOR
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'NCHA5' INVINCIBELLE WEE WHITE
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens LIL ANNIE
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'Ncha7' INVINCIBELLE MINI MAUVETTE
Zones 3-
9
Smooth phlox
Phlox glaberrima
Zones 3-
8
Smooth sumac
Rhus glabra
Zones 3-
9
Smooth yellow violet
Viola pubescens var. Eriocarpa
Zones 3-
7
Snake's head fritillary
Fritillaria meleagris
Zones 3-
8
Sneezeweed
Helenium 'Bruno'
Zones 3-
8
Sneezeweed
Helenium 'Moerheim Beauty'
Zones 3-
8
Sneezeweed
Helenium 'Zimbelstern'
Zones 3-
8
Sneezeweed
Helenium amarum
Zones 3-
10
Sneezeweed
Helenium autumnale
Zones 3-
8
Sneezeweed
Helenium 'Sombrero'
Zones 3-
9
Sneezewort
Achillea ptarmica (The Pearl Group)
Zones 3-
9
Sneezewort
Achillea ptarmica 'Gipi Whit' GYPSY WHITE
Zones 3-
9
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Snow crocus
Crocus chrysanthus 'Snowbunting'
Zones 3-
8
Snow crocus
Crocus tommasinianus
Zones 3-
8
Snow crocus
Crocus tommasinianus 'Ruby Giant'
Zones 3-
8
Snow crocus
Crocus chrysanthus 'Goldilocks'
Zones 3-
8
Snow crocus
Crocus chrysanthus 'Advance'
Zones 3-
8
Snow on the mountain
Euphorbia marginata
Zones 2-
11
Snow-in-summer
Cerastium tomentosum 'Yo Yo'
Zones 3-
7
Snow-in-summer
Cerastium tomentosum
Zones 3-
7
Snow-in-summer
Cerastium tomentosum 'Olympia'
Zones 3-
8
Snowberry
Symphoricarpos albus
Zones 3-
7
Snowdrop
Galanthus nivalis 'Flore Pleno'
Zones 3-
7
Snowdrop
Galanthus nivalis 'Viridi-apice'
Zones 3-
7
Snowdrop
Galanthus nivalis
Zones 3-
7
Snowdrop
Galanthus ikariae
Zones 3-
7
Soapwort
Saponaria × lempergii 'Max Frei'
Zones 3-
7
Soapwort
Saponaria officinalis 'Flore Pleno'
Zones 3-
8
Solitary clematis
Clematis integrifolia 'Caerulea'
Zones 3-
7
Solitary clematis
Clematis integrifolia 'Rose Colored Glasses'
Zones 3-
7
Solitary clematis
Clematis integrifolia
Zones 3-
7
Solomon's seal
Polygonatum odoratum var. Pluriflorum 'Variegatum'
Zones 3-
8
Solomon's seal
Polygonatum odoratum
Zones 3-
8
Solomon's seal
Polygonatum biflorum
Zones 3-
8
Sorghum
Sorghum bicolor
Zones 2-
11
Soy bean
Glycine max
Zones 2-
11
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Spanish bluebell
Hyacinthoides hispanica 'Rose Queen'
Zones 3-
8
Spanish bluebell
Hyacinthoides hispanica 'White City'
Zones 3-
8
Spanish bluebell
Hyacinthoides hispanica 'White Triumphator'
Zones 3-
8
Spanish bluebell
Hyacinthoides hispanica 'Excelsior'
Zones 3-
8
Spanish bluebell
Hyacinthoides hispanica 'Rosabella'
Zones 3-
8
Spanish bluebell
Hyacinthoides hispanica
Zones 3-
8
Species daffodil
Narcissus poeticus var. Recurvus
Zones 3-
7
Spiked speedwell
Veronica spicata 'Blue Charm'
Zones 3-
8
Spiked speedwell
Veronica spicata 'Nana'
Zones 3-
8
Spiked speedwell
Veronica spicata 'Rotfuchs' RED FOX
Zones 3-
8
Spiked speedwell
Veronica spicata 'Glory' ROYAL CANDLES
Zones 3-
8
Spiked speedwell
Veronica spicata 'Blue Bouquet'
Zones 3-
8
Spinach
Spinacia oleracea
Zones 2-
11
Spirea
Spiraea nipponica var. Tosaensis
Zones 3-
8
Spirea
Spiraea nipponica 'Snowmound'
Zones 3-
8
Spirea
Spiraea × vanhouttei
Zones 3-
8
Split-corona daffodil
Narcissus 'Mondragon'
Zones 3-
8
Split-corona daffodil
Narcissus 'Tricollet'
Zones 3-
8
Split-corona daffodil
Narcissus 'Flyer'
Zones 3-
9
Split-corona daffodil
Narcissus 'Colorama'
Zones 3-
8
Split-cupped daffodil
Narcissus 'Mary Gay Lirette'
Zones 3-
8
Spotted deadnettle
Lamium maculatum 'White Nancy'
Zones 3-
8
Spotted deadnettle
Lamium maculatum 'Dellam' GOLDEN ANNIVERSARY
Zones 3-
8
Spotted deadnettle
Lamium maculatum 'Elisabeth de Haas'
Zones 3-
8
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Spotted deadnettle
Lamium maculatum 'Cosmopolitan'
Zones 3-
8
Spotted phlox
Phlox maculata
Zones 3-
8
Spring beauty
Claytonia virginica
Zones 3-
8
Spring crocus
Crocus vernus 'Pickwick'
Zones 3-
8
Spring crocus
Crocus vernus 'Remembrance'
Zones 3-
8
Spring crocus
Crocus vernus 'Striped Beauty'
Zones 3-
8
Spring crocus
Crocus vernus 'Jeanne d'Arc'
Zones 3-
8
St. John's wort
Hypericum perforatum 'Topas'
Zones 3-
8
Staghorn sumac
Rhus typhina 'Dissecta'
Zones 3-
8
Staghorn sumac
Rhus typhina
Zones 3-
8
Standard dwarf bearded iris
Iris 'Peach Petal Pie'
Zones 3-
8
Standard dwarf bearded iris
Iris 'Stealing Home'
Zones 3-
8
Standard dwarf bearded iris
Iris 'Sun Doll'
Zones 3-
8
Standard dwarf bearded iris
Iris 'Ballet Lesson'
Zones 3-
8
Standard dwarf bearded iris
Iris 'Cocoa Pink'
Zones 3-
8
Standard dwarf bearded iris
Iris 'Kiwi Slices'
Zones 3-
8
Standard dwarf bearded iris
Iris 'Wavelength'
Zones 3-
8
Standard dwarf bearded iris
Iris 'Being Busy'
Zones 3-
8
Stonecrop
Hylotelephium erythrostictum 'Mediovariegatum'
Zones 3-
9
Stonecrop
Hylotelephium 'Vera Jameson'
Zones 3-
9
Stonecrop
Hylotelephium 'Herbstfreude' AUTUMN JOY
Zones 3-
9
Stonecrop
Sedum 'Purple Emperor'
Zones 3-
7
Stonecrop
Hylotelephium telephium 'Matrona'
Zones 3-
9
Stonecrop
Sedum 'Rosy Glow'
Zones 3-
9
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Stonecrop
Sedum erythrostictum 'Frosty Morn'
Zones 3-
9
Stonecrop
Sedum 'Garnet Brocade'
Zones 3-
9
Stonecrop
Sedum 'African Sunset'
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.