I am attempting to get rid of lichen that is growing on a corrugated fiberglass overhang (extends about 10′ off the edge of the roof). There is a tree nearby with branches that extend over the overhang that also has lichen growing on it. What is the appropriate herbicide/fungicide to get rid of the lichen?

Thanks for your question Roberta. The product you are looking for is a spray of potassium based soap. You can find it at Hewitt’s under the name of Safers Moss & Algae Killer. Although lichen isn’t mentioned in the name of the product, it will do the job. It comes in a easy-to-use hose end sprayer so you won’t have to do any mixing. Here’s a web address that you can use to find out all about it: . . . http://www.saferbrand.com/store/garden-care/5324

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