Fertilizing Lawns: Water It In
After applying fertilizer, water your lawn with a quarter to a half inch. This will ensure you get the material where it can be used by plants. The amount and frequency of water needed varies greatly, depending on plant species and soil conditions. Remember not to water too much, as fertilizer runoff can get into storm drains and possibly pollute waterways. Maintain plant health and protect water quality by fertilizing and watering correctly.

