How Soon After Applying Weed & Feed Can I Reapply?


Because an overapplication of weed and feed will kill your grass, you should exercise extreme caution whenever you work on your lawn with products designed for that purpose. The herbicide component of the components is the source of the most of the trouble. If the chemicals used to kill weeds pile up, they might be harmful to the turfgrasses as well. It is recommended that you wait at least two months before applying a weed and feed product again, and that you only do so twice a year total. Carefully read the product label, and be sure you follow any and all directions.

What Is Weed and Feed?

A pre-emergent herbicide or a post-emergent herbicide may be included in a product for lawn maintenance known as “weed and feed.” This product treats weeds and feeds the grass at the same time. Lawn fertiliser is always included in weed and feed products. Herbicides that are applied before broadleaf weed seeds have a chance to germinate are known as pre-emergent herbicides. Herbicides that are used after broadleaf weeds have begun to develop in a lawn are known as post-emergent herbicides.

When to Apply Weed and Feed

When applying weed and feed mixtures that include pre-emergent herbicide, the optimal time to do it is in the early spring, before the weeds develop. A pre-emergent herbicide will be ineffective against weeds that have already emerged in the grass if the herbicide was applied after the weeds emerged. On the other hand, weed and feed products that include post-emergent herbicide are only useful for treating lawns that already have an established weed problem before they are administered. In application terms, this implies that post-emergence herbicides and fertilisers may be administered beginning in late April at the latest.

How to Apply Weed and Feed

When the weather is below 80 degrees Fahrenheit but above freezing, apply the weed and feed mixture to the grass a day or two after mowing it to its regular height. A pre-emergent herbicide is sprayed to a dry grass using a product that contains the herbicide. In the event that it does not rain during the next three days, you will need to fully water the grass in order to activate the herbicide. When sprayed to a damp grass, a post-emergent weed and feed product works more effectively because the granules are more likely to adhere to the weeds’ leaves. However, precipitation wipes the granules off the leaves, so you should water your lawn and wait until there is no chance of precipitation in the forecast for several days before applying the product. Utilize a lawn spreader while applying weed and feed so that you can get a uniform dispersion of the product. In order to prevent coming into touch with the herbicide, you should not let children or animals play on the grass while the weed and feed granules are still visible.


Do not apply weed and feed to a lawn that has just been planted. Wait until at least two passes have been made over the grass with the mower.

Problems With Using Weed and Feed

When you want to apply weed and feed on your lawn, getting the time correct might be difficult since it can be tough. When the herbicide must be administered to the grass, it is possible that the grass will not benefit from the application of a fertiliser. In the early spring, which is the optimal time to apply a pre-emergent herbicide, a dosage of fertiliser promotes lush, green growth. However, the grass benefits more from root formation, which enables it to grow well during the course of the next summer. To a similar extent, applying post-emergent herbicides in the late autumn, when broadleaf weeds are busy accumulating nutrients in their roots, is when they are most effective. On the other hand, the best time to apply fertiliser is either early or late summer.