Quack Grass is a perennial weed that reproduces through seed and its excessive whitish or yellowish rhizomes that end in sharp points. Leaves are flat and pointed.
Scattered along roadsides in Southern Yukon.
Quack Grass has spreading roots. The only other wild rye with spreading roots is Sand-dune Wild Rye (Elymus lanceolatus ssp. psammophilus) which has hairy seeds and flower bracts.
It forms extensive rhizomes that compete strongly for water and nutrients with cultivated crops and native grasses. It can also hinder the regeneration of native woody species when it forms dense mats.
Perennial plants require depletion of nutrient reserves in the root system, prevention of seed production and prevention of dispersal. Small fragments of rhizomes can regenerate, making Quack Grass extremely difficult to control mechanically. Quack Grass should not be planted in seeding projects.
For more information visit: Yukon Invasive Species Council
Plant | Grass Family (Poaceae) |
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