Silverbush
Convolvulus cneorum
Zones 8-
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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Sinofranchetia
Sinofranchetia chinensis
Zones 7-
10
Sinowilsonia
Sinowilsonia henryi
Zones 7-
10
Sisyrinchium
Sisyrinchium 'Quaint and Queer'
Zones 6-
9
Slender false brome
Brachypodium sylvaticum
Zones 5-
9
Slender goldshower
Galphimia gracilis
Zones 9-
11
Slender rosinweed
Silphium gracile
Zones 5-
9
Slenderleaf false foxglove
Agalinis tenuifolia
Zones 2-
11
Small anise tree
Illicium parviflorum
Zones 7-
10
Smallhead blazing star
Liatris microcephala
Zones 6-
9
Smooth hydrangea
Hydrangea arborescens 'Grandiflora'
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'Annabelle'
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'Dardom' WHITE DOME
Zones 4-
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 'Piiha-I' ENDLESS SUMMER BELLA ANNA
Zones 4-
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 'NCHA5' INVINCIBELLE WEE WHITE
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'SMHAMWM' SEASIDE SERENADE BAR HARBOR
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens LIL ANNIE
Zones 3-
9
Smooth hydrangea
Hydrangea arborescens 'Ncha7' INVINCIBELLE MINI MAUVETTE
Zones 3-
9
Smooth sumac
Rhus glabra
Zones 3-
9
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Smooth witherod
Viburnum nudum 'Count Pulaski'
Zones 5-
9
Smooth witherod
Viburnum nudum 'Winterthur'
Zones 5-
9
Smooth witherod
Viburnum nudum
Zones 5-
9
Snap bean
Phaseolus coccineus
Zones 7-
11
Snapdragon
Antirrhinum majus
Zones 7-
10
Snapdragon
Antirrhinum majus SNAPTASTIC ORANGE FLAME
Zones 8-
11
Sneeze weed
Eupatorium capillifolium 'Elegant Feather'
Zones 6-
9
Sneezeweed
Helenium amarum
Zones 3-
10
Sneezeweed
Helenium 'Sombrero'
Zones 3-
9
Sneezeweed
Helenium 'Balsalulow' SALUD YELLOW
Zones 4-
9
Sneezeweed
Helenium autumnale 'Balsaluemb' SALUD EMBERS
Zones 4-
9
Sneezewort
Achillea ptarmica (The Pearl Group)
Zones 3-
9
Sneezewort
Achillea ptarmica 'Gipi Whit' GYPSY WHITE
Zones 3-
9
Snow on the mountain
Euphorbia marginata
Zones 2-
11
Snow poppy
Eomecon chionantha
Zones 6-
9
Snowdrop bush
Styrax officinalis
Zones 9-
10
Soapberry
Sapindus saponaria
Zones 9-
11
Society garlic
Tulbaghia violacea
Zones 7-
10
Soft tree fern
Dicksonia antarctica
Zones 9-
10
Softstem bulrush
Schoenoplectus tabernaemontani
Zones 4-
9
Solomon's seal
Polygonatum odoratum 'Byakko'
Zones 4-
9
Sophora
Sophora davidii
Zones 6-
9
Sorghum
Sorghum bicolor
Zones 2-
11
Sourwood
Oxydendrum arboreum
Zones 5-
9
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South American jelly palm
Butia capitata
Zones 9-
11
Southern blue flag
Iris virginica 'Contraband Girl'
Zones 5-
9
Southern blue flag
Iris virginica
Zones 5-
9
Southern blue flag
Iris virginica var. Shrevei
Zones 5-
9
Southern lady fern
Athyrium asplenioides
Zones 5-
9
Southern magnolia
Magnolia grandiflora 'D.D. Blanchard'
Zones 7-
9
Southern magnolia
Magnolia grandiflora 'Bracken's Brown Beauty'
Zones 5-
9
Southern magnolia
Magnolia grandiflora
Zones 7-
9
Southern prairie aster
Eurybia hemispherica
Zones 6-
9
Southern prickly-ash
Zanthoxylum clava-herculis
Zones 7-
9
Southern red oak
Quercus falcata
Zones 6-
9
Southwestern white pine
Pinus strobiformis 'Coronado'
Zones 5-
9
Soy bean
Glycine max
Zones 2-
11
Spanish bayonet
Yucca aloifolia
Zones 8-
11
Spanish broom
Spartium junceum
Zones 8-
10
Spanish moss
Tillandsia usneoides
Zones 8-
11
Spearmint
Mentha spicata 'Kentucky Colonel'
Zones 5-
9
Species iris
Iris spuria subsp. Carthaliniae
Zones 5-
9
Speedwell
Veronica 'Sunny Border Blue'
Zones 4-
9
Speedwell
Veronica peduncularis 'Georgia Blue'
Zones 6-
9
Speedwell
Veronica liwanensis
Zones 4-
9
Speedwell
Veronica peduncularis
Zones 6-
9
Speedwell
Veronica 'Novaverblu' DARK BLUE MOODY BLUES
Zones 4-
9
Spice bush
Lindera benzoin
Zones 4-
9
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Spider flower
Cleome 'Inncleosr' SENORITA ROSALITA
Zones 9-
10
Spider lily
Tradescantia (Andersoniana Group) 'Red Cloud'
Zones 4-
9
Spider lily
Hymenocallis liriosme
Zones 7-
10
Spider lily
Lycoris radiata
Zones 6-
10
Spider lily
Tradescantia virginiana
Zones 4-
9
Spider plant
Chlorophytum comosum 'Vittatum'
Zones 9-
11
Spider plant
Chlorophytum 'Bonnie'
Zones 9-
11
Spiderwort
Tradescantia (Andersoniana Group) 'Mariella'
Zones 4-
9
Spiderwort
Tradescantia (Andersoniana Group) 'Sweet Kate'
Zones 4-
9
Spiderwort
Tradescantia 'Hawaiian Punch'
Zones 4-
9
Spiderwort
Tradescantia (Andersoniana Group) 'Little Doll'
Zones 4-
9
Spiderwort
Tradescantia (Andersoniana Group) 'Snowcap'
Zones 4-
9
Spiderwort
Tradescantia (Andersoniana Group) 'Purple Profusion'
Zones 4-
9
Spiderwort
Tradescantia 'Lucky Charm'
Zones 5-
9
Spiderwort
Tradescantia fluminensis 'Albovittata'
Zones 9-
12
Spiderwort
Tradescantia ernestiana
Zones 5-
9
Spiderwort
Tradescantia longipes
Zones 4-
9
Spiked speedwell
Veronica spicata 'Icicle'
Zones 4-
9
Spinach
Spinacia oleracea
Zones 2-
11
Spindletree
Euonymus grandiflorus
Zones 6-
10
Spineless jade agave
Agave desmetiana
Zones 8-
10
Spineless yucca
Yucca elephantipes
Zones 9-
10
Spirea
Spiraea 'Dolchica'
Zones 5-
9
Spirea
Spiraea media
Zones 4-
9
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Spirea
Spiraea media 'SMSMBK' DOUBLE PLAY BLUE KAZOO
Zones 4-
9
Split-corona daffodil
Narcissus 'Flyer'
Zones 3-
9
Sponge gourd
Luffa aegyptiaca
Zones 5-
11
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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.