Navel orange
Citrus × sinensis 'Washington'
Zones 9-
10
9
USDA Hardiness Zone 9
20 to 30°F • Very warm winter climates
Includes sub-zones: 9a, 9b | Ideal for: tropical plants, palms, citrus trees | 3047 total plants
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Navel orange
Citrus × sinensis 'Trovita'
Zones 9-
10
Navelwort
Omphalodes cappadocica
Zones 6-
9
Neches River rosemallow
Hibiscus dasycalyx
Zones 7-
9
Needle palm
Rhapidophyllum hystrix
Zones 6-
10
Neillia
Neillia ribesioides
Zones 6-
9
Nemesia
Nemesia (group)
Zones 2-
11
Nemesia
Nemesia caerulea
Zones 9-
10
Nepal ivy
Hedera nepalensis var. Sinensis
Zones 7-
10
Netted chain fern
Woodwardia areolata
Zones 3-
9
New York ironweed
Vernonia noveboracensis
Zones 5-
9
New Zealand flax
Phormium tenax
Zones 9-
11
New Zealand spinach
Tetragonia tetragonioides
Zones 2-
11
Night jessamine
Cestrum nocturnum
Zones 9-
11
Nippon daisy
Nipponanthemum nipponicum
Zones 5-
9
Nordic inkberry
Ilex glabra 'Chamzin' NORDIC
Zones 3-
9
Norfolk Island hibiscus
Lagunaria patersonii
Zones 9-
11
Oak
Quercus × warei 'Long' REGAL PRINCE
Zones 4-
9
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
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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
Obedient plant
Physostegia virginiana 'Nicauca' AUTUMN CARNIVAL
Zones 3-
9
October daphne
Hylotelephium sieboldii
Zones 3-
9
Ohio buckeye
Aesculus glabra 'Nana'
Zones 5-
9
Ohio spiderwort
Tradescantia ohiensis
Zones 4-
9
Okra
Abelmoschus esculentus 'Baby Bubba'
Zones 2-
10
Okra
Abelmoschus esculentus
Zones 2-
11
Old field goldenrod
Solidago nemoralis
Zones 3-
9
Oleander
Nerium oleander 'Luteum Plenum'
Zones 8-
10
Oleander
Nerium oleander
Zones 8-
10
Oleaster
Elaeagnus × ebbingei
Zones 7-
9
Oleaster
Elaeagnus macrophylla
Zones 7-
9
Olive
Olea europaea 'Sevillano'
Zones 8-
10
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Onion
Allium altaicum
Zones 6-
9
Onion
Allium cepa
Zones 5-
10
Orange bulbine
Bulbine frutescens
Zones 9-
11
Orange coneflower
Rudbeckia fulgida
Zones 3-
9
Orange daylily
Hemerocallis fulva
Zones 3-
9
Orange jessamine
Cestrum aurantiacum
Zones 7-
11
Orchid
Dendrobium (group)
Zones 9-
12
Orchid
Oncidium (group)
Zones 9-
12
Orchid
Zygopetalum (group)
Zones 9-
10
Orchid
Phragmipedium (group)
Zones 9-
12
Orchid
Phaius (group)
Zones 9-
12
Oregano
Origanum 'Kent Beauty'
Zones 6-
9
Oregano
Origanum 'Bristol Cross'
Zones 5-
9
Oregano
Origanum 'Drops of Jupiter'
Zones 4-
9
Orienpet lily
Lilium ORANIA
Zones 5-
9
Oriental arborvitae
Platycladus orientalis 'Elegantissima'
Zones 5-
9
Oriental arborvitae
Platycladus orientalis 'Collen's Gold'
Zones 5-
9
Oriental arborvitae
Platycladus orientalis 'Aurea Nana'
Zones 6-
9
Oriental arborvitae
Platycladus orientalis
Zones 6-
9
Oriental lily
Lilium 'Muscadet'
Zones 5-
9
Oriental lily
Lilium 'Pink Heaven'
Zones 5-
9
Oriental plane tree
Platanus orientalis
Zones 7-
9
Ornamental cabbage
Brassica oleracea (Ornamental Cabbage and Kale Group)
Zones 2-
11
Ornamental onion
Allium thunbergii 'Ozawa'
Zones 4-
9
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Ornamental onion
Allium 'Purple Sensation'
Zones 4-
9
Ornamental oregano
Origanum laevigatum 'Herrenhausen'
Zones 5-
9
Ornamental pepper
Capsicum annuum 'Black Pearl'
Zones 9-
11
Ornamental pepper
Capsicum annuum 'Onyx Red'
Zones 9-
11
Osage orange
Maclura pomifera
Zones 4-
9
Ouachita Mountain goldenrod
Solidago ouachitensis
Zones 6-
9
Overcup oak
Quercus lyrata
Zones 5-
9
Ox eye
Heliopsis helianthoides var. Scabra 'Goldgefieder' GOLDEN PLUME
Zones 3-
9
Ox eye
Heliopsis helianthoides var. Scabra 'Sommersonne' SUMMER SUN
Zones 3-
9
Ox eye
Heliopsis helianthoides var. Scabra 'Burning Hearts'
Zones 3-
9
Ox-eye daisy
Heliopsis 'Helhan' LORAINE SUNSHINE
Zones 3-
9
Ox-eye daisy
Heliopsis helianthoides 'Tuscan Sun'
Zones 3-
9
Ox-eye daisy
Heliopsis helianthoides var. Scabra 'Spitzentanzerin' BALLERINA
Zones 3-
9
Oxeye sunflower
Heliopsis helianthoides var. Scabra 'Venus'
Zones 3-
9
Oxeye sunflower
Heliopsis helianthoides
Zones 3-
9
Oxeye sunflower
Heliopsis helianthoides 'Inhelsodor' TUSCAN GOLD
Zones 3-
9
Oxeye sunflower
Heliopsis helianthoides 'Fire Twister'
Zones 3-
9
Ozark hairy corkwood
Leitneria pilosa subsp. Ozarkana
Zones 5-
9
Ozark phlox
Phlox pilosa subsp. Ozarkana
Zones 4-
9
Pacific Island silvergrass
Miscanthus floridulus
Zones 6-
9
Padang cassia
Cinnamomum burmannii
Zones 9-
11
Pak-choi
Brassica rapa (Chinensis Group)
Zones 2-
11
Pak-choi
Brassica rapa (Chinensis Group) 'Violetta'
Zones 2-
11
Pale purple coneflower
Echinacea pallida
Zones 3-
10
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Pale yellow-eyed grass
Sisyrinchium striatum
Zones 5-
9
Palm sedge
Carex muskingumensis
Zones 4-
9
Pampas grass
Cortaderia selloana 'Monrin' SUN STRIPE
Zones 8-
10
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View all 3047 plants for Zone 9 with advanced filtering options. Search by plant type, sun exposure, water needs, and more.
See All PlantsBest Plants for Zone 9
USDA Hardiness Zone 9 experiences winter minimum temperatures between 20 to 30°F. This collection includes 3047 plants specifically suited for Zone 9 conditions, including tropical plants, palms, citrus 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.