Swamp Sunflower, Narrowleaf Sunflower, Narrow-leaved Sunflower, Helianthus angustifolius var. planifolius, Coreopsis angustifolia
The last sunflower to bloom, Helianthus angustifolius (Swamp Sunflower) is a showy perennial forming a clump of tall and sturdy, green to purplish pubescent stems. They boast a profusion of brilliant golden-yellow flowers, 2-3 in. across (5-7 cm), from fall to frost. Each flower features 10-20 yellow narrow, pointed rays surrounding a purplish-brown disk. They are an important nectar source for fall migrating monarch butterflies and other pollinators. The seeds are favored by many songbirds and are produced into the fall. The narrow, willowy leaves, 6 in. long (15 cm), are hairy and pointed at the tip. Swamp Sunflower grows from a branched, colonizing crown that spreads outward at a moderate rate. It is a good choice for a native or pollinator garden, a naturalized area. It is suitable for rain gardens or along streams and ponds. Use as a specimen plant or massed. Give it room to spread, and you will enjoy a profusion of late-season flowers when little else is blooming.
| Hardiness |
5 - 10 |
|---|---|
| Plant Type | Perennials |
| Plant Family | Compositae |
| Genus | Helianthus |
| Common names | Swamp Sunflower, Sunflower |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Fall |
| Height | 5' - 8' (150cm - 240cm) |
| Spread | 2' - 4' (60cm - 120cm) |
| Spacing | 48" - 72" (120cm - 180cm) |
| Maintenance | Low |
| Water Needs | Average, High |
| Soil Type | Clay, Loam, Sand |
| Soil pH | Acid, Neutral |
| Soil Drainage | Moist but Well-Drained, Moisture Retentive |
| Characteristics | Cut Flowers, Showy |
| Native Plants | United States, Delaware, Maryland, New Jersey, New York, Pennsylvania, Southeast, Southwest, Northeast, Midwest, Missouri, Illinois, Ohio, Indiana, North Carolina, Virginia, Tennessee, South Carolina, West Virginia, Mississippi, Arkansas, Louisiana, Alabama, Florida, Georgia, Kentucky, Oklahoma, Texas |
| Tolerance | Deer, Salt, Wet Soil |
| Attracts | Birds, Butterflies, Bees |
| Garden Uses | Bog Gardens, Ponds And Streams, Rain Gardens |
| Garden Styles | Prairie and Meadow, Coastal Garden, Informal and Cottage |
| Hardiness |
5 - 10 |
|---|---|
| Plant Type | Perennials |
| Plant Family | Compositae |
| Genus | Helianthus |
| Common names | Swamp Sunflower, Sunflower |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Fall |
| Height | 5' - 8' (150cm - 240cm) |
| Spread | 2' - 4' (60cm - 120cm) |
| Spacing | 48" - 72" (120cm - 180cm) |
| Maintenance | Low |
| Water Needs | Average, High |
| Soil Type | Clay, Loam, Sand |
| Soil pH | Acid, Neutral |
| Soil Drainage | Moist but Well-Drained, Moisture Retentive |
| Characteristics | Cut Flowers, Showy |
| Native Plants | United States, Delaware, Maryland, New Jersey, New York, Pennsylvania, Southeast, Southwest, Northeast, Midwest, Missouri, Illinois, Ohio, Indiana, North Carolina, Virginia, Tennessee, South Carolina, West Virginia, Mississippi, Arkansas, Louisiana, Alabama, Florida, Georgia, Kentucky, Oklahoma, Texas |
| Tolerance | Deer, Salt, Wet Soil |
| Attracts | Birds, Butterflies, Bees |
| Garden Uses | Bog Gardens, Ponds And Streams, Rain Gardens |
| Garden Styles | Prairie and Meadow, Coastal Garden, Informal and Cottage |
How many Helianthus angustifolius (Swamp Sunflower) do I need for my garden?
| Plant | Quantity | |
|---|---|---|
| Helianthus angustifolius (Swamp Sunflower) | N/A | Buy Plants |
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Create a membership account to save your garden designs and to view them on any device.
Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.
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