Helenium amarum (Yellow Sneezeweed)
Yellow Sneezeweed, Bitterweed, Yellow Bitterweed, Yellowdicks, Slender-leaved Sneezeweed, Fine-leaved Sneezweed, Yellow Dog-fennel
Helenium amarum (Yellow Sneezeweed) is a bushy annual bringing weeks of color from mid-spring to early fall. Its erect, branching stems are clothed with alternate, very fine, almost-threadlike leaves, 3 in. long (7 cm), and topped with eye-catching daisy flowers. The flowers, 3 in. across (7 cm), feature 5-10 bright yellow, wedge-shaped, drooping rays surrounding a prominent, yellow center disk that is covered with golden pollen and attracts butterflies. Helenium amarum is terrific for hot sunny rock gardens and ideal for xeriscape gardening.
- Grows up to 12-24 in. tall (30-60 cm) and 10-16 in. wide (25-40 cm). Will self-seed readily in the landscape.
- Performs best in full sun to part shade in sandy to gravelly, dry to medium, well-drained soils. Best flower production in full sun. Drought and dry soil tolerant.
- Looks stunning planted in drifts in borders, cottage gardens, or naturalistic areas such as prairies or meadows.
- No serious pest or disease issues. Keep an eye out for powdery mildew, leaf spot or rust.
- Deadheading will extend the flowering season.
- Native to the United States.
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Requirements
| Hardiness | 3
– 10 |
|---|---|
| Plant Type | Annuals |
| Plant Family | Helenium - Sneezeweeds |
| Exposure | Full Sun, Partial Sun |
| Season of Interest |
Spring (Mid,Late) Summer (Early,Mid,Late) Fall |
| Height | 1' – 2' (30cm – 60cm) |
| Spread | 10" – 2' (25cm – 60cm) |
| Spacing | 15" (37cm) |
| Water Needs | Low, Average |
| Maintenance | Low |
| Soil Type | Chalk, Clay, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Showy |
| Native Plants | United States, California, Midwest, Illinois, Indiana, Iowa, Kansas, Michigan, Missouri, Nebraska, Ohio, Wisconsin, Northeast, Connecticut, Massachusetts, Maryland, Pennsylvania, Southeast, Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, Southwest, Oklahoma, Texas |
| Tolerance | Drought, Dry Soil |
| Garden Uses | Beds and Borders |
| Garden Styles | Informal and Cottage, Prairie and Meadow |
Find In One of Our Guides or Gardens
By Sonke Haas, Flickr
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 | 3
– 10 |
|---|---|
| Plant Type | Annuals |
| Plant Family | Helenium - Sneezeweeds |
| Exposure | Full Sun, Partial Sun |
| Season of Interest |
Spring (Mid,Late) Summer (Early,Mid,Late) Fall |
| Height | 1' – 2' (30cm – 60cm) |
| Spread | 10" – 2' (25cm – 60cm) |
| Spacing | 15" (37cm) |
| Water Needs | Low, Average |
| Maintenance | Low |
| Soil Type | Chalk, Clay, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Showy |
| Native Plants | United States, California, Midwest, Illinois, Indiana, Iowa, Kansas, Michigan, Missouri, Nebraska, Ohio, Wisconsin, Northeast, Connecticut, Massachusetts, Maryland, Pennsylvania, Southeast, Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, Southwest, Oklahoma, Texas |
| Tolerance | Drought, Dry Soil |
| Garden Uses | Beds and Borders |
| Garden Styles | Informal and Cottage, Prairie and Meadow |
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