Weed and Feed Question

You should always follow the label directions when using insecticides, herbicides, fungicides or fertilizers. If the label says the product should be watered in, do it. It generally means the active ingredient is absorbed by the roots. Until it gets watered, it will not begin to work properly. Watering after application also washes the herbicide down below the foliage of the grass, reducing contact by people walking on the lawn. Always read the label directions carefully and follow them. Make sure you apply the weed and feed evenly and carefully follow rates. Weed and feed products are useful and may be applied now. But if you apply too much or apply it unevenly, it can hurt the grass.

For the record: copy and pasted from an old NOLA article. I assume the water in is to prevent run off and cross toxicity

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