Aspects of this topic are discussed in the following places at Britannica.
Impatiens balsamina, the garden balsam, is native to the tropics of Asia but has long been cultivated in temperate regions of the world. In its many horticultural forms it is one of the showiest of garden flowers and is relatively easy to cultivate. I. biflora, I. nolitangere, and I. pallida, all known variously as touch-me-not, snapweed, and jewelweed, are common weeds...
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