Once you apply F-stop, will the fungus ring come back or is this a regular/yearly treatment?
Answer:
Ferti-Lome F-stop is protectant and curative lawn fungicide that works systemically in established turfgrass and home lawns. One application protects for up to 4 weeks per the product label. If you are treating for necrotic ring spot, you will treat in mid- Spring and in the Fall (2 times in the Fall prior to the grass going dormant). There is a 28 day interval for application for both seasons.