oblong black spots in zoysia grass

Question

What would cause black spots approx. 3×7 inches in size in patches on a zoysia lawn? The spots are not connected to each other and the grass in the center is dead, but the roots appear to be alive. Thanks for any help you can offer.

Answer 1

You may have slime mold. This article will help: https://www.gardeningknowhow.com/lawn-care/lgen/black-substance-on-lawns.htm