Product Q&A

Answer:

When applying a pre-emergent like Quali-Pro Prodiamine 4L Pre-Emergent Herbicide, the rule of thumb is by September 15th. However, keep in mind that if you are seeding in the same season you would want to either seed first, then apply the pre-emergent at least 6 weeks later toa llow the lawn to establish. Or seed at least 3 months after the pre-emergent has been applied. 

Answer last updated on: 08/10/2016

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