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Pre-Emergents – A Double Application

Q: I am considering combining two types of pre-emergents, Halts and LESCO 0-0-7 and applying them in one application, instead of double. Is combining the two products a good idea?

A: Halts and LESCO contain the same weed preventer chemical: pendimethalin. Applying them at the same time would be a double application. In my experience, applying a single application of weed preventer, using label directions, watered in, and timed properly, will do a great job preventing seeds from germinating. If you have a tremendous weed infestation, do one application between now and mid-March followed by another in May.

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