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Bruce from Norwalk, Ct writes

Prodiamine 65 WDG -use 1.1 tsp or 3.3 tsp per 1k sq ft/gallon - which one?

Hi, I am reading about Prodiamine 65 wdg and am a bit confused about measuring what my lawn needs. Several of the posts suggest 0.185 oz - 0.055 oz for 1k sq ft. This translates to a pretty wide range of 1.1 tsp - 3.3 tsp. How do I know for 1k sq ft whether to use 1.1 tsp or 3.3 tsp or some amount in between? Does it have anything to do with months duration of protection?


The rate of Prodiamine 65 WDG (Generic Barricade) you use depends on how long you want the application to last and how many applications you want to do a year.  At the highest rate it can last up to 8 months if you just want to do one application a year, otherwise you can do split applications at lower rates for control anywhere from 2-6 months as directed on the product label for your lawn type.

Answer last updated on: 03/19/2020

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