Uncle's tip:  How long do I have to wait before over seeding my lawn after applying PREVENT?  

PREVENT  should not be used over new or dormant grass seed. The herbicide will remain active in the soil 10-12 weeks, preventing all grass seed from germinating, not just crabgrass.  However; You can be successful when spring seeding. Tell your sales person and they can explain spring seeding in greater detail or read more about PREVENT and spring seeding

PREVENT!® | Crabgrass Preventer plus fertilizer |

How do I kill crabgrass? PREVENT is the best pre-emergent herbicide crabgrass control for the mid-west. A pre-emergent herbicide must be applied in early spring before crabgrass seeds start to germinate or "emerge". Application date will depend on weather conditions and how quickly the soil warms up each spring.  Grass Pad's Idiot Proof  Lawn Care Program recommends the first application of PREVENT between Mid-March to Mid-April.  The yellow blooms of forsythia are an excellent indicator to warmer soil conditions, favorable for crabgrass germination, and when you should apply PREVENT 

PREVENT  contains slow release  fertilizer to help strengthen spring lawns and keep turf grass more competitive against weed pressure. For season long crabgrass control, a  second application booster shot of PREVENT is applied Late-May to Early June. 

Why two applications? Uncle's Idiot Proof Lawn Care Program recommends two applications of PREVENT.  When applied as directed,  two sequential applications, eight to ten weeks apart will provide consistent  and effective control against annual summer weeds throughout the growing season.  A single application herbicide, for preemergence control of crabgrass, will slowly be broken down by soil microbial activity over the course of a summer, leading to crabgrass breakthrough by fall.  Two applications of PREVENT crabgrass control will provide a longer period of control for annual weeds that germinate later in the year than crabgrass (e.g. goosegrass, foxtail, etc.)

#1 - PREVENT is Idiot Proof! Grass Pad's two step application of PREVENT formula is more forgiving if slightly over applied from inaccurate measurements, uncalibrated fertilizer spreaders or operator error.

#2 - PREVENT is formulated for the mid-west. The amount of pre-emergent required to kill crabgrass in the mid-west is not the same for crabgrass in Newark NJ. Nationally sold crabgrass killers sold in most chain and box stores use the same crabgrass pre-emergent formula for all home lawns from Newark to San Diego.

#3 - PREVENT comes in bigger bags. Larger pellets have better particle distribution. Bigger particles hold more herbicide and that means more herbicide covering the lawn. National name brands want smaller and lighter bags, so they can ship more bags on a pallet.

#4 - PREVENT has the best spring fertilizer formula. Promoting rapid growth of dense turf significantly reduces the amount of crabgrass in the lawn. Grass Pad's fertilizer formula makes grass grow, leaving little room in the soil for crabgrass to grow.

* Best Crabgrass Pre-emergent for Mid-West

* Apply Early Spring to Prevent Crabgrass

* First Application Mid-March to Mid-April 

* Slow & Fast Release Combo Spring Fertilizer

* Larger Pellet Size Better Particle Distribution

* Part of Uncle's Idiot Proof Lawn Care Program

Prevent as seen on TV