| Large irregular patches over large areas of lawn | Straw/Bleached/brown | Spring/Summer | Soil below surface is brown even after watering and puddles can occur on this area | Dry Patch Disease CURE: Wetting Agent |
| Circular patches varying around 15cm as it spreads | Straw but distinctly pink/red | Summer/Autumn/occasionally Winter | Patches have red needles protruding from diseased leaves of variable growth | Red Thread |
| Circular up to 30cm in diameter | Brown | Late summer/Autumn or in damp weather | Irregular shaped orange/brown patches often in damp weather with a white or pink mould around the edge | Fusarium |
| Irregular patches spreading rapidly | Brown and decaying | Early spring to Summer | Damage may vary from yellowing growth to dying back; or grass leaving bare patches; or lots of bird activity | Leatherjackets or Chafer Grubs |
| Various areas on lawn | Straw/Brown | Through to October | Grass has gone this colour and appears dead the day after its been cut; or has been long; or has had lots of sun | In shock from Mowing - CURE: Growth Regulator |
| Irregular patches of variable size | Yellow/Brown | Any time of year | Grass is more prone to moss and has a build up of thatch; or poor drainage; or you cannot push a match through the lawn easily | Compaction |
| Irregular patches throughout lawn | Yellow/brown beneath the grass | Any time of year | Lawn is spongy to walk on it; when you cut it you notice the coloured patches throughout the lawn | Thatch |
| Grass growing too quick | Yellow/Brown | April to October | Grass is growing far too quick and you are struggling to cut due to weather | Excessive Grass Growth |