Water
Water regularly, especially during prolonged dry spells, to maintain consistently moist soil. Avoid waterlogging, as this can lead to root rot.
Allow the top 2-3 cm of soil to dry out slightly between waterings in warmer months.
Also known as Autumn Helenium · Autumn Sneezeweed · Common Helenium
Common Sneezeweed (Helenium autumnale) is a North American native perennial producing masses of daisy-like yellow flowers in late summer and fall.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun
75% intensity
Thrives in locations receiving at least six hours of direct sunlight daily.
Consistent Moisture
50% intensity
Prefers moist soil, especially during dry periods.
Loam, Clay, Sandy
50% intensity
Adaptable
50% intensity
Prefers moderate temperatures; hardy in USDA zones 3-8.
Moderate
50% intensity
Benefits from annual compost and a spring feeding.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water regularly, especially during prolonged dry spells, to maintain consistently moist soil. Avoid waterlogging, as this can lead to root rot.
Allow the top 2-3 cm of soil to dry out slightly between waterings in warmer months.
Deadhead spent flowers to encourage further blooming and prevent self-seeding. In late autumn or early spring, cut back the dead stems to ground level.
This tidies the plant and promotes vigorous new growth for the following season.
Divide established clumps in early spring or collect seeds in autumn. Sow seeds indoors in late winter or sow directly outdoors after the last frost. Division is the easiest and most common method for home gardeners.
Helenium autumnale is a perennial that typically does not require frequent repotting. If grown in a container, repot every 2-3 years in early spring into a slightly larger pot with fresh potting mix to refresh the soil and provide more space.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Common Sneezeweed (Helenium autumnale)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Helenium |
| Species | Helenium autumnale |
Similar in genus Helenium
Answers based on plant encyclopedia data
