Here Sun City Lawn Care is going to explain the 3 times per year method of applying a preemergent to your lawns. It can vary depending on your location within the United States so it is important that you tune into key details regarding soil temperatures and the appropriate times of the year to get your applications down in the ground.
How Preemergents Work
Pre-emergence herbicides work by creating a vapor barrier that resides on the soil surface that will protect the lawn from future weed seedlings germinating. This action takes place on a molecular level that inhibits the grass or weed seedlings from germinating and growing into a new weed. The key step when applying is to ensure the product gets watered into the lawn either through irrigation or rainfall.
As pre-emergents degrade over time, a re-application every 3-5 months is our best recommendation. Wether the products degrades through microbial activity or the disturbance of the soil system your habitual practice will be key to preventing weeds from emerging in the future.
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