WANT A HEALTHY LAWN, START WITH THE SOIL
Agriculture Canada indicates that there are billions of organisms in a teaspoon of healthy soil. This soil life directly impacts the availability of lawn nutrients. So the secret of a healthy lawn (all plants), is not top down through fertilizing, in fact that is negative in the long run — it is in keeping soil life happy and multiplying.
** Know your soil, amend with a layer of compost or other organics or other materials as necessary. A simple shovel test will tell you what you need. New subdivision lawns will always be needy unless they get lots of organics.
** Aerate effectively especially in compacted areas. Keep the soil open so that water and organic matter can percolate in, grass roots can then grow and soil life can eat! Fertilization causes thatch which encourages pests and reduces water percolation.
** Then over seed with a top quality grass seed for the location. Mix that seed with white clover seed and that will fertilize your lawn for free.
** Trees and shrubs on your lawn channel rain water down and keep the water table up as well as providing shade. This protects your lawn and it will require less watering.
** If you absolutely have to water, do it deeply. Small amounts of water encourage shallow roots and a more vulnerable lawn. Know that all grasses (except weedy ones), go into dormancy and turn brown in August, especially in dry circumstances. Cut high. Cutting low allows light in and therefore weed seeds can germinate especially twitch grass and dandelions.
** Leave your shredded lawn clippings and leaves on the lawn as natural food for all those soil microbes and soil animals.
Enjoy and protect the lake!