Invasive perennial grass threatens irrigation systems

Phragmites is an invasive perennial grass that can reach heights up to four metres tall and likes to grow in low lying areas with water. When invasive Phragmites is introduced to natural areas, it spreads rapidly, via rhizomes, and can be difficult to control once established.

“It has harmful effects on native species and aquatic ecosystems,” said provincial weed specialist Nicole Kimmel. “Phragmites can drastically alter water movement and can be particularly threatening to Alberta’s irrigation infrastructure.”

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