What you will see
Brown spots on leaves.
How to protect
- Prevention
- Airy planting.
- By hand once noticedRemove affected leaves.
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You are asking about: Common sneezeweed
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Perennial · Asteraceae family
Common sneezeweed
Helenium autumnale
Full sun to part shade 0.9–1.5 m × 0.6–0.9 m Flowers August–October to −37 °C
Flower colours Click a colour
In short a 10-second read
SunFull sun to part shade
Size0.9–1.5 m
spacing 60 cm
spacing 60 cm
FlowersAugust–October
PlantingMarch–May, September–November
WinterNo winter protection
Where to plant and how much to water
Sun, soil and water.
It grows best in full sun to part shade, in average to moist soil.
Sun
Sun6 hours or more
Part shade3–6 hours
Shadeunder 3 h
Soil
acidic to neutral soil
acidicneutralalkaline
Watering
Frost
−37 °C
How much space it takes
Mature size.
The mature plant next to a person (175 cm).
0.9–1.5 m× spread 0.6–0.9 m
Plant 60 cm apart.
Reaches maturity in about 2–5 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.
Calendar
Through the year.
Months for Central Europe. The line shows the current month.
The year at a glance
FlowersPlantingFeeding
Now, in October: a good time for planting (container plant).
JanFebMarAprMayJunJulAugSepOctNovDec
Flowers
JanFebMarAprMayJunJulAugSepOctNovDec
August–October · yellow, orange, brown or red
Planting
JanFebMarAprMayJunJulAugSepOctNovDec
container plant: March–May, September–November
Feeding
JanFebMarAprMayJunJulAugSepOctNovDec
March–May
Feeding
Nutrition.
Light
JanFebMarAprMayJunJulAugSepOctNovDec
Pests and diseases
Common problems and what to do.
The most common problems in Central Europe. Protection is listed from the gentlest option.
What you will see
Brown spots on leaves.
How to protect
- Prevention
- Airy planting.
- By hand once noticedRemove affected leaves.
Sources (1)
What to combine it with
Same needs, different flowering.
They share the same sun and soil and flower in other months — so the bed flowers for longer.
Frequently asked
Quick answers.
When does common sneezeweed flower?
In August–October; the flowers are yellow, orange, brown or red.
Does common sneezeweed tolerate shade?
It tolerates part shade (3–6 hours of sun), but not full shade.
How much space does common sneezeweed need?
At maturity 0.6–0.9 m wide and 0.9–1.5 m tall; recommended spacing 60 cm.
Leaf spots — what can you do?
Airy planting. Remove affected leaves.
Sources (15) Checked 14 October 2026
- plants.ces.ncsu.edu
- missouribotanicalgarden.org
- api.gbif.org 2
- rhs.org.uk 2
- yardandgarden.extension.iastate.edu
- bethchatto.co.uk
- perennials.com
- Invasive plant lists — this species is not on them: EU, Slovakia, Czechia, Germany, Poland, Denmark
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Uses
In the garden and at home.
Pollinators
many