Greenhouse temperatures of 68F-85F are sufficient, although ideal growth conditions occur with a 50F to 100F fluctuation. Conclusion Welwitschia mirabilis is a species that has confounded scientists and cultivators for years. A paradox in every sense, Welwitschia displays characteristics typical of tropical plants while surviving for generations in an extreme desert environment. It's amazing adaptive qualities are worthy of further studiy, and will no doubt prove a rich source of genetic material for scientific exploration. Experienced cultivators of this desert species report very similar practices.
Variation are few, but are significant in promoting maximum cultural health.
Growers interested in reproducing these results can do so by following the recommended techniques above, and by individual experimentation. Though sensitive in some respects, Welwitschia is a species of great perseverance that will grow well in captivity with some accomodation. E-mail to author. 19 Feb. 1997. Succulent Flora of Southern Africa.