Robinia

摘要

Robinia have been beset by problems over the past decade. The most widely grown variety, the golden-leaved 'Frisia', which until now has been a popular tree for streets and parks, has been suffering from an as yet unidentified disease.Regardless of the identity of the exact set of factors leading to the decline of these trees, the symptoms are clearly seen—new leaves not unfurling in the spring or leaves falling prematurely, then there is branch dieback and, in the worst cases, treedeath.Growers are reducing their stocks of this variety in particular so the decision for gardeners and landscapers now is whether to completely shy away from the genus or to continue growing those species and varieties that seem to be escaping the fate of'Frisia.