Why organic? Think about this:
- What effect do insecticides, herbicides, pesticides, etc. have on kids, pets, birds, earthworms, and other desirables that inhabit our lawns?
- Can kids walk bare-footed safely through your lawn?
- Set your mower as high as it will go (3 to 4 inches).
- Water only when your grass shows signs of drought stress and then water deeply (put a cup in your sprinkler zone and make sure it gets at least an inch of water).
- Fertilize with an organic fertilizer in the fall and spring. I recommend the Ringer brand.
- Have the pH of your soil professionally tested. Add lime if it is below 6.0 and gardener’s sulfur if it is above 7.0.
- How much top soil do you have? See how deep a shovel will go into the soil. How deep can you dig a hole in one minute? If you have less than four inches of soil, you must add topsoil.
With these methods you will mow less, water less, never buy pesticides and have the best looking lawn on your block.
Before my master gardener training I thought that herbicide use had a time and place. The training covered not only the time and place, but also covered the details of toxicity. 2-4D is considered one of the safest herbicides. A quantity of 2-4D that would be about the same as a roll of life savers rubbed on the skin of four kindergarten children would kill two of them. This is not getting it in their mouth, but just rubbed on their skin. My reading on this subject has exposed far too many nightmares than I care to share here.
My closing opinion is that I can see no time and no place to ever use herbicides. Especially not for anything as frivolous as a lawn. I would rather have weeds.