All common lawn grasses are attacked. Develops in patches up to a meter across. Initially water soaked leaves that then fade to a pale fawn.

Brown top and poa are most susceptible, but rye and fescue are also attacked. A cool wet weather disease of lawns which appears in extended periods of wet weather.

A fungus that attacks all grasses, in warm hot humid weather – a late spring to early autumn disease.

This leaf blight develops in circular patches 5 – 30cm across. Initially a purplish tinge which changes to a pale brown. The centre of the patch sometimes recovers to create a ring effect. The disease establishes in moderate to warm conditions, attacking rye, fescue and poa grass species.