Helianthus argophyllus (Silverleaf Sunflower)
Silverleaf Sunflower
Majestic, Helianthus argophyllus (Silverleaf sunflower) is a tall, multi-branching annual with a magnificent foliage of silvery felted leaves and a profusion of sunny yellow flowers, up to 4 in. wide (10 cm), each adorned with a chocolate center. One plant can produce up to 1-5 flower heads. Extremely long blooming from mid summer until the first frost, the blossoms are particularly attractive to goldfinches as they love to eat the seeds directly from the seedheads. Easy to grow, this wild sunflower reseeds freely and grows quickly during warm weather.
- Typically grows up to 4-6 ft. tall (180-300 cm) and 1-2 ft. wide (30-60 cm).
- Prefers full sun in average, dry to medium, well-drained soils. Drought tolerant once established.
- Low maintenance, this is an excellent choice for cottage gardens, bird or butterfly gardens, wildflower gardens, prairies and meadows or coastal gardens.
- Native to the coastal regions of Texas and naturalized in Florida and North Carolina.
Learn How To Plant, Care and Grow Gorgeous Sunflowers
Cherished for their beauty, Sunflowers (Helianthus) are striking ornamental annuals or perennial plants grown for their colorful summer and fall blooms. Fast-growing, they can reward you with glamorous blooms between 55 and 100 days after planting. Here are some basic rules that need to be followed to enjoy their splendid flowers.Read More
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Requirements
| Hardiness | 2
– 11 |
|---|---|
| Climate Zones | 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 |
| Plant Type | Annuals |
| Plant Family | Helianthus - Sunflowers |
| Exposure | Full Sun |
| Season of Interest |
Summer (Mid,Late) Fall |
| Height | 4' – 6' (120cm – 180cm) |
| Spread | 1' – 2' (30cm – 60cm) |
| Spacing | 24" (60cm) |
| Water Needs | Low, Average |
| Maintenance | Low |
| Soil Type | Chalk, Clay, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Cut Flowers, Showy |
| Native Plants | United States, Southeast, Florida, North Carolina, Southwest, Texas |
| Tolerance | Drought |
| Attracts | Birds, Butterflies |
| Garden Styles | Coastal Garden, Informal and Cottage, Prairie and Meadow |
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By Lui12 / Shutterstock
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
Requirements
| Hardiness | 2
– 11 |
|---|---|
| Climate Zones | 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 |
| Plant Type | Annuals |
| Plant Family | Helianthus - Sunflowers |
| Exposure | Full Sun |
| Season of Interest |
Summer (Mid,Late) Fall |
| Height | 4' – 6' (120cm – 180cm) |
| Spread | 1' – 2' (30cm – 60cm) |
| Spacing | 24" (60cm) |
| Water Needs | Low, Average |
| Maintenance | Low |
| Soil Type | Chalk, Clay, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Cut Flowers, Showy |
| Native Plants | United States, Southeast, Florida, North Carolina, Southwest, Texas |
| Tolerance | Drought |
| Attracts | Birds, Butterflies |
| Garden Styles | Coastal Garden, Informal and Cottage, Prairie and Meadow |
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