General Plant Information (Edit)
Plant Habit: Grass/Grass-like
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Wet Mesic
Mesic
Dry Mesic
Dry
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 11
Plant Height: 3 to 7 feet
Leaves: Evergreen
Other: Green to yellowish green with off-center whitish midrib, fine serrated margins, sharp, pointed tips.
Fruit: Showy
Flowers: Showy
Flower Color: White
Other: 4 to 8 inch long panicles
Bloom Size: Under 1"
Flower Time: Spring
Late spring or early summer
Other: Can flower year-round in tropical and sub tropical areas.
Underground structures: Rhizome
Uses: Erosion control
Groundcover
Suitable for forage
Resistances: Humidity tolerant
Drought tolerant
Propagation: Other methods: Division
Pollinators: Wind
Miscellaneous: Tolerates poor soil

Image
Common names
  • Japanese Blood Grass
  • Cogongrass
  • Kunai Grass
  • Blady Grass
  • Alang-Alang
  • Lalang Grass

Photo Gallery
Location: western Oregon
Date: 2009
Location: Fairfax, Virginia (Outdoors)
Location: West Valley City, UT
Date: 2011-07-07
Location: western Oregon
Date: spring 2015
Location: Louisiana
Invasion of this grass
Location: Litchfield, NH
Date: August 
Japanese Blood Grass
This plant is tagged in:
Image

Comments:
  • Posted by scvirginia on Jun 1, 2021 1:29 PM concerning plant:
    According to the National Invasive Species Information Center, Cogon Grass is "one of the world's worst invasive weeds, and is firmly established in several southeastern states". It's a Federal Noxious Weed, so it's illegal to transport it between states without a permit.
Plant Events from our members
lovesblooms On May 11, 2015 Transplanted
to pots with petunias
christine2 On May 12, 2021 Obtained plant
BR 3
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