Many people often wonder how long does weed killer stay in soil, since it is a product that you apply to your weeds on a regular basis and which will kill the weeds within days. The truth is that how long does weed killer last in soil depends on how it is used, and how it reacts with your soil. You should never apply weed killer to your garden unless you are certain that it is absolutely necessary, and that you know exactly how long it will last in your soil.
What You Should Have Asked Your Teachers About How Long Does Weed Killer Stay In Soil
The first question that you need to answer when looking at how long does weed killer last in soil is how long the weed killer has been on the weeds. This will be the case whether you have bought an brand new weed killer or whether you have used an old one. It also depends on whether or not you have used a chemical or organic solution to kill the weeds. Organic solutions will be more effective because they contain no harmful chemicals while chemical ones are likely to remain in the ground much longer. If you have used any herbicides or pesticides before then you can be very sure that the weed killers will leave the soil for a longer period of time.
If you have used any herbicides or pesticides on the weeds in the past then you are likely to find that the residue that remains on the soil will stay there for a longer period of time, even if the weeds are gone. You can avoid this by making sure that you only use pesticides or herbicides which have been approved for use in such a way that no residual effects occur later. There are many products available on the market which will show you how long does weed killer last in soil, but some products may be unsuitable for use in your area. Always read the label carefully so that you are sure to use only the ones that are suitable for your garden.