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.

Spots and blights are symptoms of numerous diseases and disorders caused by many factors, - bacteria, fungi, insects, mineral deficiencies, temperature, and occasionally virus. The most common which we deal with here are fungal. (Bacterial spots are covered above under bacteria.)

Club root of brassicas, Leaf curl of peaches, Bladder plum, Silver leaf and Verrucosis

Along with insect pests, fungus diseases are the most common problems in the home garden. Whilst good hygiene, rotational cropping, use of resistant varieties, a healthy compost enriched soil, and balanced fertilising all help, these diseases are still common and in some years can be very devastating.