AliEnS 👽🛸 

 It's caused by mycelium, I think it's called an angel circle or something. Expect to see mushrooms growing in that circle soon! No idea why grass love it, will look it all up now... 

 Interesting, my guess was fungal activity but the near perfect circle threw me. It's about 6 feet in diameter. We have had quite a bit if rain of late so it makes sense. 

 (again chatgpt) it's because fungal mycelium typically grows outward from a central point in a circular pattern as it searches for nutrients 

 I've got to start using chatgpt. I've used it before, but simply forget about it. I need to ask chatgpt what is a good way to not forget about chatgpt! 

 I use it for work all the time so it's a pinned tab and has become my go to over regular search engines. It's like a very well educated but somewhat naive and mischievous assistant 😄 

 Ok, chatgpt got my back (so take with a pinch of salt). It's called a fairy ring and the greener grass is from:

1. Increased Nitrogen Availability: The mycelium decomposes organic matter in the soil, releasing nitrogen and other nutrients, which promote greener, healthier grass growth.

2. Enhanced Water Retention: The dense network of fungal hyphae can improve soil structure and water retention, providing better moisture availability to the grass.

3. Soil Aeration: The fungal growth can improve soil aeration, helping grass roots to access more oxygen and grow more vigorously.

4. Hormonal Effects: Some fungi produce hormones that can stimulate grass growth.