Question

fungus grows quickly in most tall humid
condition

Answer 1

Sometimes, humidity or dampness (water vapor) in the air can supply enough moisture for mold growth. Indoor relative humidity (RH) should be kept below 60 percent -- ideally between 30 percent and 50 percent, if possible. Low humidity may also discourage pests (such as cockroaches) and dust mites.

Answer 2

There’s no doubt we’ve experienced more rain than normal this summer, with more than 20 inches of rain falling April – July. In fact, according to the National Weather service, Atlanta got 7.71 inches of rain during the month of June alone – which is almost double the 30-year average. And we’ve been seeing the side effects of the rainy and humid weather conditions, as the excess moisture fosters the growth of unwanted fungus in both warm and cool season turf grass. Specifically, more Dollar Spot and Brown Patch are appearing in our local landscapes.
I hope my answer is right