Scientific Name:
Eutrochium purpureum
Pronunciation:
yoo-TRO-kee-um pur-PUR-ee-um
Common Name:
Joe Pye weed
Family Name:
Asteraceae
Plant Type:
Herbaceous perennial
Key ID Features:
Stems erect; 1.2-2m tall, green to dark purple, especially at nodes; leaves in whorls of 3 to 5 at nodes, ovate-lanceolate, most blades 9-20cm long x 3-8cm wide, margin coarsely serrate, bright green, most petioles 5-15mm long cm long; inflorescence panicle-like, most heads with 5-7 disk florets that have relatively very long pink and forked styles; achenes 3-5 mm long, feathery for wind dispersal.
Habit:
Spreading, Stiffly upright
Form:
Oval - vertical
Texture:
Medium - coarse
Mature Height:
1.3 - 2.0m
Mature Spread:
0.6 - 1.0m
Growth Rate:
Fast
Origin:
Canada - eastern, U.S. - northeast
Hardiness Rating:
Zone 4: (-34 to -29 °C)
Exposure:
Full sun
Soil/Growing Medium:
Alkaline, Rocky or gravelly or dry, Well-drained
Water Use:
Moderate, Low
Landscape Uses:
Attract butterflies, Cut flower or foliage, Fall interest, Group or mass planting, Perennial border, Waterside planting, Wildlife food, Woodland margin
Additional Info:
Google. Hybrizes freely with other species in genus. Compare to E. maculatum.
Leaf Morphology:
Form:
Simple
Arrangement:
Whorled
Texture/Venation:
Soft flexible
Surfaces:
Pubescent
Colour in Fall:
Green
Shapes:
Lanceolate, Ovate
Apices:
Acuminate
Bases:
Cuneate
Margins:
Serrate
Inflorescence Type:
Head (capitulum), Panicle-like
Flower Morphology:
Flowers perfect
Corolla Shape:
Ligulate
Ovary Position:
Inferior
Colour (petals):
Showy, Violet, Pink
Flower Scent:
Sweet
Flower Time at Peak:
Aug, Sep, Oct
Fruit Type:
Cypsela (achene + calyx)
Fruit Colour:
Brown
Fruiting Time:
Sep, Oct
Additional Info:
Remove fruit before seeds mature to prevent unwanted spread.
Bark Morphology:
Smooth
Bark or Stem Colour:
Red
Organ Modifications:
Rhizomes
Propagation:
Seed, Division - below ground parts
Pest Susceptibility:
Mildew, Rust (Pest resistant, Deer resistant)
Course(s):
- HORT 1155
Location(s):
- (BUG) BUG garden
- (GAZ) GAZebo
- (GAZN) GAZebo North : cv. Baby Joe
- (WLG) WoodLand Garden