Sugar encourages grass roots to seek nitrogen in soil. This competitive use depletes soil nitrogen for weeds and helps grass flourish and crowd out pest plants. You can use granulated or powdered sugar sprinkled lightly over your lawn or a molasses spray. … Evenly coat the lawn and water it in lightly.

Will sugar make my grass green?

Sugar will fortify grass while discouraging weeds. It is easy to apply. It is cheap. Sugar will not only give you a green lawn, but will help you to “go green,” meaning that it is free from chemicals that damage the soil, our water supply, and ourselves.

Can sugar kill weeds?

Does sugar kill every weed? Mr Gilchrist says sugar is recommended for herbaceous annual weeds — plants with soft green stems, fleshy green leaves and exotic grasses. … because sugar depletes the nitrogen in the soil and it may affect other species of plants that you want in your garden,” Mr Gilchrist says.