Noxious Weeds Profile - Nodding Thistle
Table of Contents
English - nodding thistle
Nodding thistle. Flower Head, on a naked (non-winged) stalk.
Ontario Weeds Act - noxious
Pub 505 - no
Common throughout Southern Ontario in pastures, roadsides and waste areas especially on coarse textured soils.
Seeds (Wind blown)
Not listed on 2,4-D, Banvel or Roundup labels. Best time to mow is within two days of the opening of the first terminal flowers in mid summer. May need more than one mowing due to differences in plant maturity. Seed will be produced when allowed to bloom for 6 days. Mowing prior to flowering will result in regrowth. Mowing will not kill first year rosettes. Cultivation needs to cut them off below the rosette or crown of the plant.
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