Prairie junegrass
Koeleria macrantha
Zones 3-
9
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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Prairie phlox
Phlox pilosa
Zones 4-
9
Prairie poppy mallow
Callirhoe alcaeoides 'Logan Calhoun'
Zones 4-
9
Prairie spiderwort
Tradescantia bracteata
Zones 4-
9
Prairie wake robin
Trillium recurvatum
Zones 4-
9
Prickly poppy
Argemone polyanthemos
Zones 2-
11
Prickly-pear
Opuntia compressa
Zones 4-
9
Prickly-pear
Opuntia humifusa
Zones 4-
9
Prickly-pear
Opuntia aurea 'Coombe's Winter Glow'
Zones 5-
9
Pricklyburr
Datura inoxia
Zones 9-
10
Pride of barbados
Caesalpinia pulcherrima
Zones 9-
11
Pride of Madeira
Echium candicans
Zones 9-
11
Princess flower
Tibouchina urvilleana
Zones 9-
11
Proso millet
Panicum miliaceum
Zones 2-
11
Pruhonicensis hybrid primula
Primula 'Wanda'
Zones 3-
9
Pummelo
Citrus maxima
Zones 9-
11
Purple cestrum
Cestrum elegans
Zones 8-
11
Purple coneflower
Echinacea purpurea 'Ruby Giant'
Zones 3-
9
Purple coneflower
Echinacea purpurea 'Kim's Mop Head'
Zones 3-
9
Purple coneflower
Echinacea purpurea 'Razzmatazz'
Zones 3-
9
Purple coneflower
Echinacea purpurea 'Hope'
Zones 3-
9
Purple loosestrife
Lythrum salicaria
Zones 4-
9
Purple lovegrass
Eragrostis spectabilis
Zones 5-
9
Purple meadow parsnip
Thaspium trifoliatum
Zones 3-
9
Purple moor grass
Molinia caerulea subsp. Caerulea 'Variegata'
Zones 4-
9
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Purple passionflower
Passiflora incarnata
Zones 5-
9
Purple-headed sneezeweed
Helenium flexuosum
Zones 5-
9
Purple-net toadflax
Linaria reticulata
Zones 2-
11
Purslane
Portulaca oleracea RIO SERIES
Zones 8-
11
Purslane
Portulaca oleracea subsp. Sativa
Zones 2-
11
Queen lily
Curcuma petiolata
Zones 8-
10
Queen Victoria agave
Agave victoriae-reginae
Zones 8-
10
Quinoa
Chenopodium quinoa
Zones 2-
11
Radish
Raphanus sativus
Zones 2-
11
Rain lily
Zephyranthes grandiflora
Zones 9-
10
Rain lily
Zephyranthes candida
Zones 7-
10
Rain lily
Zephyranthes treatiae
Zones 7-
10
Rain lily
Zephyranthes simpsonii
Zones 7-
10
Ramie
Boehmeria nivea
Zones 7-
9
Rampion bellflower
Campanula rapunculoides
Zones 3-
9
Rapeseed
Brassica napus (Oleifera Group)
Zones 2-
11
Raspberry
Rubus biflorus
Zones 5-
9
Rat tail radish
Raphanus sativus 'Caudatus'
Zones 2-
11
Rattlesnake plantain
Goodyera pubescens
Zones 5-
9
Red cedar
Juniperus virginiana 'Grey Owl'
Zones 2-
9
Red cedar
Juniperus virginiana 'Burkii'
Zones 2-
9
Red cedar
Juniperus virginiana 'Hillspire'
Zones 2-
9
Red cedar
Juniperus virginiana 'Canaertii'
Zones 3-
9
Red cedar
Juniperus virginiana 'Hetzii'
Zones 3-
9
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Red cedar
Juniperus virginiana 'Taylor'
Zones 4-
9
Red cedar
Juniperus virginiana
Zones 2-
9
Red hot poker
Kniphofia 'Elvira'
Zones 6-
9
Red maple
Acer rubrum 'Northwood'
Zones 3-
9
Red maple
Acer rubrum 'October Glory'
Zones 4-
9
Red maple
Acer rubrum 'Franksred' RED SUNSET
Zones 3-
9
Red maple
Acer rubrum 'Brandywine'
Zones 4-
9
Red maple
Acer rubrum
Zones 3-
9
Red mulberry
Morus rubra 'Super Dwarf'
Zones 5-
9
Red-hot poker
Kniphofia 'Primrose Beauty'
Zones 5-
9
Red-hot poker
Kniphofia hirsuta 'Fire Dance'
Zones 4-
9
Red-hot poker
Kniphofia 'Peachy Cheeks'
Zones 6-
9
Red-hot poker
Kniphofia uvaria
Zones 5-
9
Red-hot poker
Kniphofia 'Lemon Popsicle'
Zones 6-
9
Red-hot poker
Kniphofia 'High Roller'
Zones 5-
9
Red-hot poker
Kniphofia 'Joker's Wild'
Zones 5-
9
Red-hot poker
Kniphofia 'Orange Blaze'
Zones 5-
9
Redbird flower
Pedilanthus tithymaloides
Zones 9-
11
Redbud
Cercis 'Merlot'
Zones 6-
9
Redflower false yucca
Hesperaloe parviflora
Zones 5-
10
Redflower false yucca
Hesperaloe parviflora 'Coral Glow'
Zones 5-
9
Reed canary grass
Phalaris arundinacea var. Picta 'Feesey'
Zones 4-
9
Reed canary grass
Phalaris arundinacea var. Picta 'Picta'
Zones 4-
9
Reed canary grass
Phalaris arundinacea
Zones 4-
9
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Reed grass
Calamagrostis brachytricha
Zones 4-
9
Reflexed sedge
Carex retroflexa
Zones 5-
9
Rehmannia
Rehmannia elata
Zones 7-
10
Resurrection fern
Polypodium polypodioides
Zones 6-
9
Resurrection lily
Lycoris squamigera
Zones 5-
9
Reticulated iris
Iris reticulata
Zones 5-
9
Rhododendron
Rhododendron 'Solidarity'
Zones 5-
9
Rhododendron
Rhododendron 'Jericho'
Zones 5-
9
Rhododendron
Rhododendron 'Lee's Dark Purple'
Zones 5-
9
Rhododendron
Rhododendron maddenii subsp. Crassum
Zones 8-
10
Rhododendron
Rhododendron sinogrande
Zones 8-
10
Rhododendron
Rhododendron lanatum
Zones 7-
9
Rhododendron
Rhododendron SOUTHGATE BREEZY
Zones 6-
9
Rhododendron
Rhododendron 'Tyler Morris' SOUTHGATE RADIANCE
Zones 6-
9
Rhododendron
Rhododendron 'Lisenne Rockefeller' SOUTHGATE DIVINE
Zones 6-
9
Rice-paper plant
Tetrapanax papyrifer
Zones 8-
10
Rienga lily
Arthropodium cirrhatum
Zones 8-
11
River birch
Betula nigra 'Cully' HERITAGE
Zones 4-
9
River birch
Betula nigra 'Little King' FOX VALLEY
Zones 4-
9
River birch
Betula nigra 'BNMTF' DURA-HEAT
Zones 4-
9
River birch
Betula nigra
Zones 4-
9
Rock rose
Helianthemum 'Henfield Brilliant'
Zones 4-
9
Rock soapwort
Saponaria ocymoides
Zones 2-
9
Romanesco broccoli / cauliflower
Brassica oleracea (Botrytis Group)
Zones 2-
11
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Roof iris
Iris tectorum
Zones 4-
9
Roscoea
Roscoea humeana
Zones 6-
9
Rose
Rosa 'HORcogjil' AT LAST
Zones 5-
9
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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.