Legionnaire’s disease can and does happen to home gardeners – it is at best a nasty illness, at worst a fatal one. What causes it and how can we be on guard against it? There are at least 50 different types of the Legionella bacteria, only one of which is found in water systems, while another is linked to inhalation of particles from potting mix and garden soil. Read NGIA advice and information here.
There is now a national Legionella Working Group, prompted in part by a Fair Go item about warnings and information (or lack of) about the disease in garden centres.