Once the soil warms, most pre-emergence herbicides will last between eight and 12 weeks. Dr. Grady points out, therefore a second application may be necessary. Don't Plant Too Quickly.

When it comes to lawn care and lawn treatment products, many homeowners wonder if January is too early for herbicide application. Timing is everything if you want these products to work ...

A: In most cases, herbicide application should not be considered as a first option for weed control. Hand weeding, hoeing and mulching are tedious but effective methods of weed control. Sometimes, ...

Preemergent herbicides By Paul Schnare March 15, 2004 There are three major preemergent herbicides that are used in the lawn care market at this time for crabgrass control, pendamethalin, team (a ...

Pre-emergent herbicide kills seedlings as they emerge so timing is very important – it must be applied before the weeds come up. And it’s only effective against annual weeds, it will not kill ...

Pre-emergent herbicides prevent weed seeds from germinating. They are relatively safe to use around existing plantings, such as turfgrass. They must be applied before the weed seedlings emerge to ...

It is always good to start with a pre-emergence program to help prevent weeds from becoming resistant. Usually this is a different chemistry than what would be used post-emergence. It also will ...

Pre-emergent herbicides can be effective against difficult-to-control weeds like oxalis and crabgrass. Unfortunately, they must be reapplied to remain effective.