Vine
Purple Allamanda
Allamanda blanchetii
Varieties We Carry
Dwarf CompactaAllamanda blanchetiiDwarfAllamanda blanchetii
Sizes & Pricing
3 galFrom$14.95
Fresh this week. Last restocked Jun 15.
LightFull Sun
WaterModerate
Mature size6-10 feet × 3-5 feet
About Purple Allamanda
Purple Allamanda (Allamanda blanchetii) is a tropical sprawling shrub or vine from Brazil, bearing bold reddish-purple to pink funnel-shaped flowers during warm months. In NE Florida it performs best in frost-protected locations; a hard freeze will kill it to the ground. Grows 6–10 feet tall with support; excellent on trellises, arbors, or fences. All plant parts are poisonous. Starting at $14.95.
Plant details
- Bloom Season
- Spring, Summer, Fall
- Flower Color
- Pink, Purple
- Growth Rate
- Moderate
- Foliage
- Evergreen
- Soil
- Loam, Sandy, Well-drained
Best planting months
Recommended forZone 9b · St. Augustine, FL
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Seasonal care
Bloom season. Good planting window.
Bloom season.
Bloom season. Ideal planting window.
Bloom season. Retains foliage through winter.
Care essentials
Light
Requires full sun for best flowering; plant in the sunniest available spot in NE Florida. In zone 9b, site in a frost-protected, south-facing microclimate — allamanda is killed or severely damaged by frost.
Water
Water generously until established, then maintain moderate moisture. During NE Florida's summer rainy season, supplemental irrigation is usually unnecessary; ensure excellent drainage to prevent nematode and root issues.
Soil & Fertilizer
Plant in well-drained, nematode-free soil — nematodes are the primary pest concern in Florida sandy soils. Feed regularly with a balanced slow-release fertilizer during the warm growing season. Pinch new growth to encourage bushiness and more blooms; avoid over-pruning which removes flower buds.
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Common questions
Is Purple Allamanda a good plant for St. Augustine?
Purple Allamanda is a vine for Zone 9b coastal Florida gardens, reaching 6-10 feet × 3-5 feet.
Care information verified from
Last reviewed February 2026. Our care guidance comes from trusted horticulture sources and decades of helping St. Augustine gardeners. Conditions here can vary dramatically from one area to the next, so come ask us and we'll tailor it to your yard.