Lawns cannot produce enough Nitrogen on their own so additions of fertilizer are necessary to maintain a green and healthy lawn. A healthy lawn will be deep green in color. Yellow blades intermixed with green is a sign of Nitrogen deficiency
Too much Nitrogen and you are inviting disease and fungus to infect your lawn. Too little Nitrogen and your grass growth will slow. It will begin to yellow and die with the grass tips beginning to yellow first.
Perform a soil test and see what your lawn needs. Adjust your Nitrogen level accordingly using a high quality lawn fertilizer.
Hint: Check your lawn clippings regularly. These are the grass blade tips and will show yellowing first which is a sign of a low Nitrogen level.
Lawn care tips from Far West Turf Farm, your Vancouver, WA sod farm.