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Definition of pernicious weed

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Categorized under "General"

Definition as written by Terry:

Plants that are destructive to other plants in their midst are sometimes characterized as pernicious weeds. Plants often tagged with this epithet include the following:

Aegopodium podagraria (Ground-elder or Bishop's Weed)
Cirsium arvense (Canadian Thistle)
Convulvulus arvensis (Bindweed)
Phalaris arundinacea (Canary Reed)
Polygonum cuspidatum (Japanese Knotweed)
Sinapsis arvensis (Wild Mustard)
Solanum dulcamara (Deadly Nightshade)
Tanacetum vulgare (Tansy Ragwort)

This is not meant to be an exhaustive list, but merely a representative sampling. Some of these plants are regularly cultivated in gardens, but gardeners should be aware of the potential danger these plants pose to other plants, both native and cultivated.

See also noxious weed, invasive, undesirable plant species, and garden thug


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