Moss application time

Asked February 28, 2016, 10:41 PM EST

When is the best time of year to apply moss killer? Thanks.

Douglas County Oregon

2 Responses

If you are wanting to kill moss on your roof, wait until we have a forecast for no more than a half an inch of rain late in the rainy season so you don't wash the product out into the street and into the river. I usually apply sometime in May. House applied products can be either zinc or ammoniated salts of fatty acids.

If you are putting moss killer on the lawn you can wait until we have a light rain forecast, after the rain stops go out and apply the material on the damp plants. Make sure you have a couple days after your application that will be dry. Lawn products should contain iron as their active ingredient.

Thank you!