Scientific Name:
Poa annua
Pronunciation:
POE-uh AN-you-uh
Common Name:
annual bluegrass
Family Name:
Poaceae
Plant Type:
Annual, Poales (grass-like), Weed (horticultural)
Key ID Features:
Leaf tips boat-shaped, blade with puckering and wrinkling; seed head can be seen even when grass is very low growing. Field ID terms: boat tip, seed heads, brighter, apple-green, dull under.
Habit:
Upright
Form:
Oval - vertical, Round
Texture:
Medium - fine
Mature Height:
0.1 - 0.2m
Mature Spread:
0.1 - 0.3m
Growth Rate:
Moderate
Origin:
Central / west Asia, Europe (Naturalized In BC)
Hardiness Rating:
Zone 5: (-29 to -23 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Landscape Uses:
Erosion control
Additional Info:
Leaf Morphology:
Form:
Grass-like
Arrangement:
Alternate, Basal
Texture/Venation:
Soft flexible, Parallel venation
Surfaces:
Glabrous
Colour in Fall:
Green
Shapes:
Acicular
Apices:
Acute
Bases:
Sheathing
Margins:
Entire
Inflorescence Type:
Spikelet, Panicle-like
Flower Morphology:
Flowers perfect
Number Of Petals:
0
Ovary Position:
Superior
Colour (petals):
Not showy, Yellow
Flower Scent:
None
Flower Time at Peak:
Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
Fruit Type:
Grain (caryopsis)
Fruit Colour:
Brown
Fruiting Time:
Mar, Apr, May, Jun, Aug, Sep, Oct
Additional Info:
Not showy, 2-3mm long, tips pointed; lemma 2.5-3mm long, 5-nerved, prominant keeled mid-nerve; usually hairy on keel of palea; rachilla prominant
Bark Morphology:
Smooth
Bark or Stem Colour:
Green
Propagation:
Seed
Pest Susceptibility:
Anthracnose (Pest resistant, Disease resistant)
Specific Pests:
