This section is from the book "A Manual Of Weeds", by Ada E. Georgia. Also available from Amazon: A Manual Of Weeds.
Introduced. Annual. Propagates by seeds.
Time of bloom: May to September.
Seed-time: August to November.
Range: Ontario to Minnesota, southward to Florida and Texas.
Habitat: Fields and waste places.
A near relative of the Jimson Weed and equally poisonous. Stems one to five feet tall, fork-branched, smooth, deep purple. Leaves dark green, with purple veins and petiole, more hairy than the preceding species, long ovate, and coarsely toothed. The flaring lips of the trumpet-like corollas are violet or lavender, paling to white in the throat. The prickly capsule or "apple" is also purple, the thorns on its surface a little longer and stouter than those of the Jimson Weed. Seeds similar in appearance.
Means of control the same as for the Jimson Weed.
 
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