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Russian knapweed (Rhaponticum repens)


Weed photo of: Rhaponticum repens
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Keys to ID:


Identification:


Control:

Mech: Mowing repeatedly before plant bolts. Pulling and mowing may reduce seed production, but roots of plants will remain viable in the soils after these treatments.


Cautions:

Russian knapweed can cause severe allergic reaction in certain individuals. Care should be taken to limit exposure of skin to freshly cut or pulled plants and if any respiratory difficulty is experienced, the person should be monitored for a more severe reaction.


Synonyms: