Not to be confused semantically with : Apple-of-Peru (a member of the same family) or Apple Mint nor with Apple nor Crab Apple [plants with similar names]

Easily mistaken for : Angel's Trumpets (a plant belonging to the same Nightshade Family, which also has similar trumpet shaped white flowers and a spiky fruit (but which has wider but fewer thorns)

Some similarities to : the Bindweeds such as Hedge Bindweed, Large Bindweed and Field Bindweed in that the flowers have some similarities, but the leaves and stance totally different (bindweeds climb, Thorn-apple doesn't).

Slight resemblance to : Apple-of-Peru

The thorny fruit pod has a superficial resemblance to those of : Sweet Chestnuts

Grows in waste places, as an arable weed, or in gardens.

Flowers and leaves of a similar shape to those of Apple-of-Peru, but rather than being light blue and with a white inner, the flowers are greeny-white with a greenish inner. The leaves lack the black glandular trichomes and the black, five-flanged flower buds of present on Apple-of-Peru. It is also in a different Genus (Datura) than that of Apple-of-Peru (Nicandra), although it is in the same Nightshade Family.

It possesses much the same Tropane Alkaloids such as Hyoscamine, Scopolamine and Atropine as does Henbane, but not necessarily in the same proportions, nor indeed in the same concentration. Indeed, the Datura Genus are renown for the highly variable concentrations of these alkaloids, varying in concentration by up to 5:1 depending upon soil conditions, growing site, the climate, the weather and a host of other variable ill-defined factors. See Henbane for a description of the Tropane Alkaloids (present to variable degrees) in Thorn-Apple.

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