Solving the Mystery of Blackened Lawn After All-in-One Treatment

Hello! I'm sorry to hear that you're having trouble with your lawn after applying Westland Aftercut All-in-One. Based on what you've described, it sounds like the moss has indeed blackened and died, which is what the product instructions indicate would happen.

As for whether or not your lawn is permanently damaged, it's difficult to say without seeing the before and after photos you mentioned. However, it's possible that the grass will eventually take over and cover the dead moss, as one of the answers you found suggested. On the other hand, if the grass was also affected by the product, it may need to be reseeded in September, as the other answer you found indicated.

My best advice would be to wait a few more weeks and see how the grass recovers. If the grass is still looking patchy or damaged after 4 weeks, you may want to consider reseeding. Keep in mind that applying products like Westland Aftercut All-in-One can be tricky, and it's important to follow the instructions carefully and not over-apply the product.

If you're still unsure about what to do, I would recommend talking to a professional landscaper or horticulturist for more personalized advice. They'll be able to take a look at your lawn and give you a better idea of what needs to be done.

I hope this helps! Let me know if you have any other questions.