AnnualCosmos
- Light
- Full Sun
- Water
- Low to Moderate
- Size
- 1-3 feet (C. sulphureus); up to 6 feet for C. bipinnatus × 2-3 feet (varies by cultivar)
Plant Collection
Zone 9aHardy
Plants that handle Northeast Florida cold snaps and rebound well in our Zone 9b gardens.
Browse the collection
523 plants found
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Zone 9a Hardy Plants
Annual
AnnualCowpea
Vigna unguiculata
- Light
- Full Sun
- Water
- Low
- Size
- 1-3 feet × 2-3 feet
TreeCrape Myrtle
Lagerstroemia indica
- Light
- Full Sun
- Water
- Moderate
- Size
- 3-30 feet × 6-25 feet (highly variable by cultivar)
VineCreeping Fig
Ficus pumila
- Light
- Part Shade, Full Shade
- Water
- Moderate
- Size
- 10-40 feet × 3-6 feet
GroundcoverCreeping Jenny
Lysimachia nummularia
- Light
- Part Sun, Part Shade
- Water
- Moderate
- Size
- 2-4 inches × 12-24 inches
GroundcoverCreeping Raspberry
Rubus hayata-koidzumii
- Light
- Full Sun, Part Shade
- Water
- Moderate
- Size
- 0.5-1 feet × 3-6 feet
PerennialCrinum Lily
Crinum asiaticum
- Light
- Full Sun, Part Shade
- Water
- Moderate
- Size
- 3-6 feet × 4-7 feet (clumps spread wider over time)
VineCross Vine
Bignonia capreolata
- Light
- Full Sun, Part Sun
- Water
- Moderate
- Size
- 30-50 feet × 6-10 feet
PerennialCrossandra
Crossandra infundibuliformis
- Light
- Part Sun, Part Shade
- Water
- Moderate
- Size
- 2-3 feet × 1-2 feet
ShrubCroton
Codiaeum variegatum
- Light
- Full Sun, Part Sun
- Water
- Moderate
- Size
- 3-6 feet × 3-5 feet (varies by cultivar)
SucculentCrown of Thorns
Euphorbia milii
- Light
- Full Sun
- Water
- Low
- Size
- 2-5 feet × 3-5 feet
AnnualCucumber
Cucumis sativus
- Light
- Full Sun
- Water
- High
- Size
- Vining types: 6-8 feet (trellised); bush types: 2-3 feet × 2-3 feet
ShrubCuphea
- Light
- Full Sun, Part Shade
- Water
- Moderate
- Size
- 1-2 feet × 2-3 feet
PerennialDahlia
- Light
- Full Sun (with light afternoon shade in hottest months)
- Water
- Moderate
- Size
- 1-6 feet × 1-3 feet
TreeDahoon Holly
Ilex cassine
- Light
- Full Sun, Part Sun, Part Shade
- Water
- High
- Size
- 20-30 feet × 8-12 feet
PerennialDaylily
Hemerocallis
- Light
- Full Sun, Part Shade
- Water
- Moderate
- Size
- 1-4 feet × 1.5-3 feet (varies by cultivar)
ShrubDeerberry
Vaccinium stamineum
- Light
- Full Sun, Part Sun
- Water
- Low
- Size
- 3-10 feet × 3-6 feet
AnnualDelphinium
- Light
- Full Sun
- Water
- Moderate
- Size
- 2-6 feet × 1-2 feet
SucculentDesert Rose
Adenium obesum
- Light
- Full Sun
- Water
- Low
- Size
- 2-4 feet × 2-3 feet (in containers in zone 9b)
SucculentDevil's Backbone
Euphorbia tithymaloides
- Light
- Full Sun, Part Shade
- Water
- Low
- Size
- 2-6 feet × 1-2 feet
AnnualDianthus
- Light
- Full Sun
- Water
- Moderate
- Size
- 6-12 inches × 8-12 inches (varies by variety)
AnnualDiascia
- Light
- Full Sun, Part Sun, Part Shade
- Water
- Moderate
- Size
- 6-12 inches × 12-18 inches
HerbDill
Anethum graveolens
- Light
- Full Sun
- Water
- Moderate
- Size
- 2-3 feet × 1-2 feet
ShrubDistylium
- Light
- Full Sun, Part Sun, Part Shade
- Water
- Low
- Size
- 3-6 feet × 4-6 feet
Zone 9a Hardy Questions
Are zone 9a hardy good for St. Augustine gardens?+
Zone 9a Hardy can work well in St. Augustine when matched to Zone 9b light, water, soil, and coastal exposure.
How should I choose zone 9a hardy?+
Choose zone 9a hardy by mature size, sun exposure, water needs, and whether the planting site gets salt wind or deer pressure.
Can Southern Horticulture help me pick zone 9a hardy?+
Yes. Bring photos of your space and our team can help match zone 9a hardy to your conditions and design goals.