Swamp Sunflower
Helianthus angustifolius
Varieties We Bring In
Last received Sep 23, 2026.
We bring this in seasonally, so what is on the lot changes week to week. A received date shows when it last came in, not that it is here today.
Call (904) 471-0440 to confirm this plant and size before you make the trip.
About Swamp Sunflower
A native Florida herbaceous perennial with narrow, rough dark green leaves and multi-branched stems that produce bright yellow daisy-like flowers with dark centers in fall. It forms spreading mounds and tolerates a wide range of moisture conditions, from dry upland sites to wet swales. Starting at $6.95.
Plant details
- Bloom Season
- Fall
- Flower Color
- Yellow
- Growth Rate
- Fast
- Foliage
- Deciduous
- Soil
- Sandy, Loam, Clay, Wet
Care essentials
Swamp Sunflower blooms best in full sun but tolerates part shade in NE Florida. In shadier spots expect taller, leggier growth with fewer flowers. Prune back hard in June to keep plants compact and well-branched before the fall bloom flush.
Tolerates a wide moisture range from periodically wet swales to average garden soils. In NE Florida sandy beds, water regularly until established; mature plants handle dry spells but produce more robust fall blooms with consistent moisture. Salt and flood tolerant.
Adaptable to sandy, loamy, or clay soils with average to high moisture. Little fertilizer is needed — a light application of balanced slow-release fertilizer in spring is sufficient. Divide clumps annually to maintain vigor and share with neighbors.
Similar needs
Browne's Savory
Shares 5 of the same needs: similar light, high water, sandy, zone 9a hardiness, and pollinator-friendly.
Winged Loosestrife
Shares 4 of the same needs: similar light, high water, sandy, and pollinator-friendly.
Purple Top Grass
Shares 4 of the same needs: similar light, sandy, zone 9a hardiness, and pollinator-friendly.
Eastern Red Cedar
Shares 3 of the same needs: similar light, sandy, and zone 9a hardiness.
Alligator Flag
Shares 4 of the same needs: high water, loam, zone 9a hardiness, and pollinator-friendly.
Calla Lily
Shares 4 of the same needs: high water, loam, zone 9a hardiness, and pollinator-friendly.
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Common questions
Is Swamp Sunflower a good plant for St. Augustine?
Swamp Sunflower is a perennial for Zone 9b coastal Florida gardens, reaching 2-6 feet × 2-6 feet.