Narrow-leaved hosta
Hosta lancifolia
Zones 3-
8
6
USDA Hardiness Zone 6
-10 to 0°F • Moderate winter climates
Includes sub-zones: 6a, 6b | Ideal for: perennials, shrubs, ornamental trees | 5960 total plants
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Nasturtium
Tropaeolum (group)
Zones 2-
11
Navelwort
Omphalodes cappadocica
Zones 6-
9
Needle palm
Rhapidophyllum hystrix
Zones 6-
10
Neillia
Neillia affinis
Zones 5-
7
Neillia
Neillia ribesioides
Zones 6-
9
Nemesia
Nemesia (group)
Zones 2-
11
Nepeta
Nepeta × faassenii
Zones 3-
8
Nepeta
Nepeta sibirica 'Souvenir d'André Chaudron'
Zones 3-
8
Nepeta
Nepeta racemosa 'Blue Wonder'
Zones 3-
8
Nepeta
Nepeta 'Six Hills Giant'
Zones 4-
7
Nepeta
Nepeta × faassenii 'Select Blue'
Zones 3-
8
Nepeta
Nepeta × faassenii 'Kit Cat'
Zones 3-
8
Nepeta
Nepeta grossheimii
Zones 5-
8
Nepeta
Nepeta × faassenii 'Purrsian Blue'
Zones 3-
8
Netted chain fern
Woodwardia areolata
Zones 3-
9
Nettle-leaved bellflower
Campanula trachelium
Zones 5-
8
Nettle-leaved mullein
Verbascum chaixii 'Album'
Zones 5-
8
Nettle-leaved mullein
Verbascum chaixii 'Sixteen Candles'
Zones 5-
8
Nettle-leaved mullein
Verbascum chaixii
Zones 5-
8
New England aster
Symphyotrichum novae-angliae 'Honeysong Pink'
Zones 4-
8
New England aster
Symphyotrichum novae-angliae 'Andenken an Alma Pötschke'
Zones 4-
8
New England aster
Symphyotrichum novae-angliae 'Purple Dome'
Zones 5-
8
New England aster
Symphyotrichum novae-angliae 'Purple Pixie'
Zones 4-
8
New England aster
Symphyotrichum novae-angliae 'Roter Stern'
Zones 4-
8
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New England aster
Symphyotrichum novae-angliae
Zones 4-
8
New England aster
Symphyotrichum novae-angliae KICKIN PINK CHIFFON
Zones 4-
8
New England aster
Symphyotrichum novae-angliae KICKIN LAVENDER
Zones 4-
8
New Jersey tea
Ceanothus americanus
Zones 4-
8
New York ironweed
Vernonia noveboracensis
Zones 5-
9
New Zealand spinach
Tetragonia tetragonioides
Zones 2-
11
Nikko fir
Abies homolepis
Zones 4-
6
Nikko maple
Acer maximowiczianum
Zones 5-
7
Ninebark
Physocarpus opulifolius 'Nanus'
Zones 2-
8
Ninebark
Physocarpus opulifolius 'Diabolo'
Zones 3-
7
Ninebark
Physocarpus opulifolius 'Seward' SUMMER WINE
Zones 3-
8
Ninebark
Physocarpus opulifolius 'Mindia' COPPERTINA
Zones 3-
7
Ninebark
Physocarpus opulifolius 'Center Glow'
Zones 3-
7
Ninebark
Physocarpus opulifolius 'Dart's Gold'
Zones 3-
7
Ninebark
Physocarpus opulifolius 'Ruby Spice'
Zones 2-
8
Ninebark
Physocarpus opulifolius
Zones 2-
8
Ninebark
Physocarpus opulifolius 'Jefam' AMBER JUBILEE
Zones 2-
8
Ninebark
Physocarpus opulifolius 'Donna May'
Zones 3-
7
Ninebark
Physocarpus opulifolius 'Podaras 3' LEMON CANDY
Zones 2-
8
Nippon daisy
Nipponanthemum nipponicum
Zones 5-
9
Nodding onion
Allium cernuum
Zones 4-
8
Nootka cypress
Xanthocyparis nootkatensis 'Aurea'
Zones 4-
7
Nootka cypress
Xanthocyparis nootkatensis 'Pendula'
Zones 4-
7
Nootka cypress
Xanthocyparis nootkatensis
Zones 4-
7
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Nordic inkberry
Ilex glabra 'Chamzin' NORDIC
Zones 3-
9
Northern bedstraw
Galium boreale
Zones 4-
8
Northern dragonhead
Dracocephalum ruyschiana
Zones 3-
7
Northern lady fern
Athyrium filix-femina var. Angustum 'Lady in Red'
Zones 4-
8
Northern lady fern
Athyrium filix-femina var. Angustum
Zones 3-
7
Northern maidenhair fern
Adiantum pedatum
Zones 3-
8
Northern pin oak
Quercus ellipsoidalis
Zones 4-
7
Northern sea oats
Chasmanthium latifolium
Zones 3-
8
Norway maple
Acer platanoides 'Crimson King'
Zones 3-
7
Norway maple
Acer platanoides 'Deborah'
Zones 3-
7
Norway maple
Acer platanoides 'Emerald Maple'
Zones 3-
7
Norway maple
Acer platanoides 'Superform'
Zones 3-
7
Norway spruce
Picea abies 'Acrocona'
Zones 3-
7
Norway spruce
Picea abies 'Gregoryana'
Zones 3-
7
Norway spruce
Picea abies 'Little Gem'
Zones 3-
7
Norway spruce
Picea abies 'Maxwellii'
Zones 2-
7
Norway spruce
Picea abies 'Nidiformis'
Zones 3-
7
Norway spruce
Picea abies 'Little Joe'
Zones 3-
8
Norway spruce
Picea abies 'Pendula'
Zones 3-
7
Norway spruce
Picea abies 'Sherwood Compact'
Zones 3-
7
Norway spruce
Picea abies 'Pumila'
Zones 3-
7
Norway spruce
Picea abies 'Weeping Blue'
Zones 3-
7
Norway spruce
Picea abies 'Formanek'
Zones 3-
7
Norway spruce
Picea abies 'Hillside Upright'
Zones 3-
7
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Norway spruce
Picea abies
Zones 2-
7
Oak
Quercus × schuettei
Zones 4-
8
Oak
Quercus × warei 'Long' REGAL PRINCE
Zones 4-
9
Oak
Quercus × leana
Zones 5-
8
Oak
Quercus dalechampii
Zones 5-
8
Oak
Quercus virgiliana
Zones 6-
9
Oakleaf hydrangea
Hydrangea quercifolia 'Flemygea' SNOW QUEEN
Zones 5-
9
Oakleaf hydrangea
Hydrangea quercifolia 'Brido' SNOW FLAKE
Zones 5-
9
Oakleaf hydrangea
Hydrangea quercifolia 'Pee Wee'
Zones 5-
9
Oakleaf hydrangea
Hydrangea quercifolia 'Alice'
Zones 5-
9
Oakleaf hydrangea
Hydrangea quercifolia 'Sike's Dwarf'
Zones 5-
9
Oakleaf hydrangea
Hydrangea quercifolia 'Little Honey'
Zones 5-
9
Oakleaf hydrangea
Hydrangea quercifolia 'Ruby Slippers'
Zones 5-
9
Oakleaf hydrangea
Hydrangea quercifolia 'Vaughn's Lillie'
Zones 5-
9
Oakleaf hydrangea
Hydrangea quercifolia
Zones 5-
9
Oakleaf hydrangea
Hydrangea quercifolia 'Queen of Hearts'
Zones 5-
9
Oakleaf hydrangea
Hydrangea quercifolia 'Piihq-i' JETSTREAM
Zones 5-
9
Obedient plant
Physostegia virginiana 'Alba'
Zones 3-
9
Obedient plant
Physostegia virginiana 'Vivid'
Zones 3-
9
Obedient plant
Physostegia virginiana 'Miss Manners'
Zones 3-
9
Obedient plant
Physostegia virginiana 'Crystal Peak White'
Zones 3-
9
Obedient plant
Physostegia angustifolia
Zones 3-
9
Obedient plant
Physostegia virginiana
Zones 3-
9
Obedient plant
Physostegia virginiana 'Pink Manners'
Zones 3-
9
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Obedient plant
Physostegia virginiana 'Nicauca' AUTUMN CARNIVAL
Zones 3-
9
Oconee bells
Shortia galacifolia
Zones 5-
7
October daphne
Hylotelephium sieboldii
Zones 3-
9
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See All PlantsBest Plants for Zone 6
USDA Hardiness Zone 6 experiences winter minimum temperatures between -10 to 0°F. This collection includes 5960 plants specifically suited for Zone 6 conditions, including perennials, shrubs, ornamental trees.
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.