In both Europe and America it quickly became a favoured ornamental, especially as a street tree, and by 1840 it was available in most nurseries.

These sorts of trees can be restored, given a concerted campaign and investment in nurseries to produce local varieties.

One country mentions a large scale project to develop gum acacia growing in West Africa. Major efforts are described in North Africa and the Sahelian countries, and one report describes activities to train forest nursery managers.

Women comprise 49 per cent of heads and specialists of nurseries, 40 per cent of assistants to forest wardens, 29 per cent of forest protection engineers, and 25 per cent of forest masters.

Meanwhile, vertical farm experiments which aim to augment urban food supplies by cultivating crops in skyscraper greenhouses are proliferating from the American Midwest to Osaka, Japan.