When to apply Wilt Pruf
To prevent winter damage from dehydration on evergreens, when is the appropriate time to spray the product Wilt Pruf on the foliage? I had thought not until the ground is frozen and if the temperature should rise above 40 degrees that is the time the plant is more susceptible to dehydration, so that would be the time to apply the product.
Oakland County Michigan
You want to apply this material when it is above freezing. If you wait until the ground is frozen then you may not get another chance to apply it.This material needs to be applied before winter so it can dry and setup. Apply this material on a warm day in November before the real winter sets in. You should also be sure and give your trees a good irrigation so that the root zone has adequate water. Here is a link to a company video at YouTube describing the product and its uses. https://www.youtube.com/watch?v=AsBmoURU4gc