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Scientific Name:
Matricaria discoidea
Pronunciation:
mat-ri-KAR-ee-uh dis-KOY-dee-uh
Common Name:
pineapple weed
Family Name:
Asteraceae
Plant Type:
Annual (true), Weed (horticultural)
Key ID Features:
Flower heads cone-shaped, composed of dense-packed yellowish-green corollas, and lacking ray-florets, have a chamomile/pineapple aroma when crushed.

Habit:
Spreading, Upright
Form:
Irregular
Texture:
Fine
Mature Height:
0.1 - 0.2m
Mature Spread:
0.1 - 0.3m
Origin:
North America (also northest Asia; now cosmopolitan)
Hardiness Rating:
Zone 6: (-23 to -18 °C)
Exposure:
Full sun
Soil/Growing Medium:
Landscape Uses:
Attract beneficial insects, Attract butterflies, Herb
Additional Info:

Leaf Morphology:
Form:
Dissected, Compound
Arrangement:
Alternate, Basal
Texture/Venation:
Soft flexible, Pinnate venation
Surfaces:
Pubescent
Compound Leaf:
Tripinnate
Shapes:
Oblong
Apices:
Acute
Bases:
Truncate
Margins:
Incised

Inflorescence Type:
Head (capitulum)
Flower Morphology:
Flowers perfect
Corolla Shape:
Tubular
Ovary Position:
Inferior
Colour (petals):
Showy, Yellow, Green-yellow
Flower Time at Peak:
Jun, Jul, Aug, Sep

Fruit Type:
Achene
Fruit Colour:
Brown
Fruiting Time:
Sep, Oct

Bark or Stem Colour:
Red
Organ Modifications:
Storage tap root
Propagation:
Seed
Pest Susceptibility:
(Pest resistant, Disease resistant, Drought tolerant)

Course(s):
  • not used (on campus)
Location(s):
  • (WDY)  WeeDY location
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