Invasive Russian Knapweed (Acroptilon repens) Creates Large Patches Almost Entirely by Rhizomic Growth. 2017.

By JOHN GASKIN AND JEFF LITTLEFIELD.

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Research results indicate that expansion of Russian knapweed patches is almost entirely by rhizomes with long-distance dispersal by seed. Controlling seed development may be effective at stopping long-distance dispersal, but treatment methods that control roots are needed to affect expansion of existing patches. READ ARTICLE.