Collection: Lawn Fertilizer for Spring & Summer

The best fertilizer for spring is a slow-release, high-nitrogen fertilizer to promote growth after winter, like our 28-0-0 High Nitrogen Lawn Food. Summer fertilizer is best to use a low-nitrogen formula, like Lawn Energizer 6-0-0 Nitrogen and Iron or Darker Green liquid iron fertilizer to prevent grass stress, and iron to encourage a deeper green. 15-0-15 Potassium and Nitrogen fertilizer is great for supporting spring and summer growth and grass health.