Invasive Weed Profiles: Weed characteristics, history and uses, plus alternative weed control strategies.

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Wildflowers & Weeds

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Holistic Weed Management (Part I)

Holistic Weed Management (Part II)

Invasive Weed Profiles & Weed Management

      Important: Most "weed problems" are really "people problems" from poor land management and a lack of ecological insight. It is easy to reach for a tool like fire, mowing, or herbicides to attack an out-of-control weed, but often those tools do little to get to the root cause of the weed infestation, and sometimes make the problems worse.

      For example, careless use of herbicides kills out many desireable native species and simplifies ecosystems, allowing weeds to re-invade later on. The arrowleaf balsamroot in this picture is one native plant that was sprayed with herbicides.

      Be sure to read the range ecology sections of this website before applying any tool of weed control.

      Below I've listed additional information on some specific invasive species:

Whitetop, Hoary Cress (Cardaria spp.)

St. Johnswort (Hypericum perforatum)

Leafy Spurge (Euphorbia escula)

Dalmation and Yellow Toadflax (Linaria genistifolia, L. dalmatica, L. vulgaris)

Dandelions (Taraxacum spp.)

Oxeye Daisy (Chrysanthemum leucanthemum)

Canada Thistle (Cirsium arvense)

Musk Thistle (Carduus nutans)

Spotted & Diffuse Knapweed (Centaurea maculosa, C. diffusa)

Russian Knapweed (Centaurea repens)

Common Tansy (Tanacetum vulgare)

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