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Invasive Plants
- Perennial Sow Thistle
- Creeping Thistle
- Oxeye Daisy
- Common Tansy
- Spotted Knapweed
- Narrowleaf Hawksbeard
- Scentless Chamomile
- Leafy Spurge
- Foxtail Barley
- Altai Wild Rye
- Crested Wheat Grass
- Smooth Brome
- Quackgrass
- Reed Canary Grass
- Bird Vetch
- Lucerne
- Sweetclover
- Greater Butter-and-Eggs
- Dalmatica Toadflas
Quackgrass
Common name: Quackgrass
Scientific name: Elymus repens
Family: Poaceae
Description
Quackgrass is a perennial weed that reproduces through seed and its excessive whitish or yellowish rhizomes that end in a sharp point. Leaves are flat and pointed and clasp the stem with claw-like pincers.
Range in Yukon
Scattered along roadsides in Southern Yukon.
Similar Species
Quackgrass has spreading roots. The only other wild rye with spreading roots is Yukon wild rye (Elymus calderi) which has hairy seeds (glumes and lemmas).
Ecological Impact
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.
Control
Perennial plants require depletion of nutrient reserves in the root system, prevention of seed production and prevention of dispersal. Quackgrass should not be planted in seeding projects.
Contact Environment Yukon Government of Yukon Box 2703 (V-5N) Bruce Bennett, Wildlife Viewing Biologist Phone: 867-667-5331 Email: bruce.bennett@gov.yk.ca |