When it comes to effective weed control, it is important to understand that not all weeds are alike- and therefore, not all weed killers are either. Knowing what to use, when, and on which plants, will ensure that you save both time and money while tackling unsightly weeds in your yard. Additionally proper use of a fertilizer is your best defense against intrusive weeds, as having a dense and robust lawn decreases weeds’ ability to set in and thrive.
Applying Pre- and Post-Emergent Herbicides
Pre-emergent herbicides kill weeds before they get a chance to emerge from the soil. This type of product is highly effective for invasive grass species that are hard to control once they’ve sprouted.
A few examples of weeds that respond almost exclusively to pre-emergent herbicides are crabgrass and quackgrass. Both their root systems and their seeding patterns make them difficult to get rid of without the use of a pre-emergent product.
Post-emergent herbicides work by directly affecting the plant’s foliage and soaking into the root system. As the name implies, they are to be applied to the weed once it has emerged from the soil. Selective post-emergent herbicides are the best way to protect surrounding plants and turfgrass from incidental harm while targeting weeds.
Post-emergents are effective on some grassy weeds, and are commonly used on broadleaf weeds like clover and henbit.