Q: Three weeks ago a lawn service sprayed an area set aside for gardening. The company says to till the area and water, water, water. Any more thoughts?
A: Much depends on what was sprayed but in general the advice you got was good. Weed control chemicals are broken down by exposure to sunshine and oxygen so tilling and watering are good recovery techniques. Any sort of compost or organic matter added to the soil will encourage fungi and bacteria in the soil to consume and break down the chemicals as well.