Scientific Name:
Helenium autumnale
Pronunciation:
huh-LEE-nee-um aw-tum-NAY-lee
Common Name:
sneezeweed
Family Name:
Asteraceae
Plant Type:
Herbaceous perennial
Key ID Features:
Grows about 2m high but is very floppy; leaves alternate, lanceolate-elliptic, most 7-17cm long x 3-4cm wide; flower has a fan-like arrangement of ray florets around red and/or yellow disk florets.
Habit:
Open, Spreading, Upright
Form:
Oval - vertical
Texture:
Medium
Mature Height:
1.3 - 2.0m
Mature Spread:
0.6 - 1.0m
Growth Rate:
Fast
Origin:
Canada - eastern, U.S. - northeast, U.S. - southwest
Hardiness Rating:
Zone 4: (-34 to -29 °C)
Exposure:
Full sun
Soil/Growing Medium:
Well-drained
Water Use:
Moderate
Landscape Uses:
Attract beneficial insects, Attract butterflies, Cut flower or foliage, Fall interest, Filler, Group or mass planting, Mixed shrub border, Perennial border, Summer interest, Waterside planting
Additional Info:
Google. Cultivars shown or on campus include H. 'Zimbelstern'. H. 'Ruby Tuesday' has red ray florets and purple-yellow disk florets.
Leaf Morphology:
Form:
Simple
Arrangement:
Alternate
Texture/Venation:
Soft flexible
Surfaces:
Glabrous
Colour in Fall:
Green
Shapes:
Elliptic, Lanceolate
Apices:
Apiculate
Bases:
Decurrent
Margins:
Serrate
Inflorescence Type:
Head (capitulum), Floriferous
Flower Morphology:
Flowers perfect
Corolla Shape:
Ligulate
Ovary Position:
Inferior
Colour (petals):
Showy, Yellow
Flower Scent:
Fragrant
Flower Time at Peak:
Jul, Aug, Sep
Fruit Type:
Cypsela (achene + calyx)
Fruit Colour:
Brown
Fruiting Time:
Oct, Nov
Additional Info:
Not showy
Bark or Stem Colour:
Green
Organ Modifications:
Fibrous-like roots
Propagation:
Seed, Cuttings, Division - below ground parts
Maintenance:
Medium
Other:
Stems will probably require support
Pest Susceptibility:
Fungal leaf spot, Rust (Pest resistant, Disease resistant, Deer resistant, Drought tolerant)
Course(s):
- HORT 2355
Location(s):
- (BUG) BUG garden
- (GAZ) GAZebo
- (GAZN) GAZebo North : cv. Zimbelstern