[header] How to control lawn weeds [title] Spot the weeds growing in your lawn. [step] Weeds generally look different from the rest of your lawn. You may spot flowers appearing, especially if dandelions are a problem for your lawn. 
You may also notice different patterns, colors and textures appearing in your lawn, indicating the growth of other species of plants. [substeps] It can be challenging to spot weeds on a lawn that is closely mown, so put the mower aside for a bit to see if you can spot any patches of weeds growing.