Slime Mould
Diagnosis
Large amounts of these organisms may suddenly appear on grass blades and stems in circular to irregular patches 2-60cm in diameter. The sporangia are typically white, grey or purplish brown but other colours are also possible.
The affected patches of grass do not normally die or turn yellow and the sporangia usually disappears within 1-2 weeks.
Management
Control methods are usually unnecessary because these organisms are more unsightly than harmful. Some fungicides can be used to control slime moulds when they are abundant and become unsightly, simple removal is usually most appropriate:
- Wash the leaves with a stream of water
- Rake or brush slime moulds from leaves