Swaziland's Alien Plants Database

Datura stramonium L.
jimsonweed, Jamestown weed, thorn apple, common thornapple, mad apple
Invasive, Problem species
Origin: Tropical America
Growth Form: Herb
Plant Description: Plant: Erect, subherbaceous annual up to 1.5 m high; stems sparsely hairy to glabrous, green, brown or purple. Leaves: Dark green or purple, paler below, ovate, up to 200 mm long, on long petioles, sparsely hairy, veins prominent, margins coarsely and irregularly toothed or lobed, bad-smelling. Flowers: White, mauve or purplish, narrowly funnel-shaped up to 100 mm long, October–March(–all year). Fruit: Brown, hardened capsules, ± erect, ovoid, up to 50 mm long x 30 mm wide, covered with slender spines up to 10 mm long.
Key Features: The fruit is egg-shaped, similar at a glance to D. ferox, but with a greater number of smaller spines on the fruits.
Control: post-emergence herbicides
More information:
Weeds & Invasive Plants Home Page
NRCS Plants Database


USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada.

Photo - flowers/leaves

William S. Justice @ USDA-NRCS PLANTS Database

Photo - fruit

K Braun, Swaziland's Alien Plants Database

Photo - flowers

K Braun, Swaziland's Alien Plants Database

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