regarding the lawn, I am leaning towards gray leaf spot btw

Crepes are under attack from some kind of leaf eater. They could use some TLC also... Look up crepe trimming/pruning online & Bayer makes a yearlong tree fertilizer in the blue bottle called "protect & feed" which works like a champ. Yard looks great in these pics!

Thank you, have never done anything to the crepes but they aren't more than three months old

Here are the others:

Here are pictures of lawn: have been mowing much higher(4.25" around), applied compost and milorganite... looks much better, but now this in one particular area

Would like to get this under control soon

Looks ring shaped a bit & blades sure look like fungus damage, but I'm a Bermuda guy so not much experience with fungus pests

What you have is a fungal disease. It doesn't really matter which one you have because the treatment is the same - corn meal. Apply ordinary corn meal to the entire lawn at a rate of 20 pounds per 1,000 square feet. You should be able to find corn meal in 50-pound bags at a feed store or in 25-pound bags at a grocery store catering to the Hispanic market. If you get it at a grocery store be careful not to get the tortilla pre-mix. That has baking soda in it that you don't want on the lawn. Corn works by attracting another, predatory fungus which kills the disease fungus. Not all fungi are bad, in fact most are good and necessary.

What is your watering schedule? How often do you water and for how long? I'm expecting you to say you water every day, because you're in Florida.

How high/low are you mowing?

There is probably a crepe myrtle forum here at Garden Web. You'd get better answers there than in the lawn forum.

heres a few pieces of info:

mow every 5-7 days depending on growth

mow at around 4.25" now

no sprinkler running (raining almost everyday)

Should any other step than cornmeal be taken? worried about losing a large part of the lawn..

thanks,

LG

so if there is no chemical action taken immediately, will I lose a large chunk of grass? just worried the lawn will go downhill quickly if organic route cant slow it down fast enough..the rest of the lawn really looks great, I cant believe how fast it has turned around with less water(sprinklers), higher mowing, and milorgnite + compost

>>so if there is no chemical action taken immediately, will I lose a large chunk of grass?

Not necessarily. I had brown patch this summer, a rarity for me, and played games with it for a month. My lawn was fighting it mostly to a standstill, and I kept waiting to see if it could get rid of the issue by itself.

In the end, a minor fungicide and then corn meal were the order of the day, but after all that I lost about 2 square feet total in four patches. That was in hot, wet weather that was perfect for disease spread.

A healthy lawn can and will fight the disease, and it sometimes wins. Keep a very close eye out, but if spread is slow then emergency reactions aren't required.

The instant it starts to accelerate, or losses begin to mount beyond mildly annoying, it's wise to pull out the big guns and get rid of it.

Today it has gotten pretty bad, and has spread quite a bit in most directions. I applied Bayers because the lawn is far from healthy or established. As of now trying to get my hands on some cornmeal but really having a hard time (Miami,FL)

Try a Hispanic market for corn meal if you can't get it anywhere else, it's extremely commonly used in Mexican and Central American cooking. The price will be higher than getting it at a grain mill or animal feed store, but it's the same stuff.

In my local store, it's right next to the International Cuisine section, which is great for when I only need a pound or three.

If you already applied the Bayer then the corn meal will not work as an anti-fungal agent. It will still work as a fertilizer and soil conditioner, though.