Details of...
Scientific Name: Helianthus tuberosus
Pronunciation: hee-lee-AN-thus too-bur-OH-sus
Common Name: Jerusalem artichoke
Family Name: Asteraceae
Plant Type: Herbaceous perennial, Invasive plant
Key ID Features: Leaves on the lower stem are broad ovoid-acute, up to 30 cm long, rough texture and hairy; flowers heads yellow, 5–10 m wide, with 10–20 ray florets.
Course(s): not used (on campus)


Habit: Upright
Form:
Texture:
Mature Size:
Height:2 - 3m
Spread:0.6 - 1.0m
Growth Rate:Fast
Origin: Canada - eastern
Hardiness Rating: Zone 4: (-34 to -29 C)
Exposure: Full sun
Soil/ Growing Medium:
Landscape Uses: Herb, Urban agriculture
Additional Info: Google Images. Wikipedia
Jerusalem artichoke
 
 
Leaf Morphology:
Form: Simple
Arrangement: Opposite
Texture/ Venation: Soft flexible
Surfaces: Pubescent
Leaf(let) Terms:
Shapes: Oblong, Ovate
Apices: Acute
Bases: Attenuate
Margins: Dentate
Additional Info: lower surface with sharp stiff hairs

 
 
Inflorescence Type: Floriferous, Head (capitulum)
Flower Morphology:
Corolla Shape:Ligulate
Colour (petals): Yellow
Flower Time at Peak: Oct
 
Fruit Type: Cypsela (achene + calyx)
Fruit Colour:
Fruiting Time:
 
Bark or Stem Colour:
  
Organ Modifications: Rhizomes, Tubers, Google Images.


 
Location(s):
(CGW) Community Garden West
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