Autumn sneezeweed (Helenium autumnale) is a perennial plant that can grow 50cm – 1.5m tall and 10cm – 50cm wide.
This plant has several common names including: autumn sneezeweed, sneezeweed, autumn Helen flower, autumn sneezewort, dog fennel, ox eye, smooth Helen flower, swamp sunflower or yellow star.
This is a deciduous plant that takes 2-5 years to reach full maturity.
Plant profile
Common name: autumn sneezeweed, sneezeweed, autumn Helen flower, autumn sneezewort, dog fennel, ox eye, smooth Helen flower, swamp sunflower, yellow star
Scientific name: Helenium autumnale
Plant type: Perennials
Habit: Clump-forming
Height: 50cm – 1.5m
Spread: 10cm – 50cm
Foliage: Deciduous
Sunlight: Full Sun
Soil: Chalk, Clay, Loam, Sand
Moisture: Moist but well drained
Garden type: Informal Garden, Wildflower meadow
Planting type: Flower borders and bedding
Other characteristics: Plants for pollinators
Seasonal colors
| Season | Stem | Foliage | Flower | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
How to plant Autumn sneezeweed (Helenium autumnale) – C T Johansson, CC BY-SA 3.0, via Wikimedia Commons
Cultivation profiles – Growing Autumn sneezeweed (Helenium autumnale) – Aaron Carlson from Menomonie, WI, USA, CC BY-SA 2.0, via Wikimedia Commons
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