How often do you water and for how long? How high/low do you mow? The weeds can be handled by something like Spectracide with Atrazine. But I would wait until the grass returns. I have gotten excellent results for fungal disease using ordinary corn meal. It is an organic approach that the experts at Texas A&M swear up and down does not work, but it has worked for me every year since 2002. It is a complete cure in 3 weeks. I am suggesting you try that because corn meal doubles as an organic fertilizer. Your spots don't look that much like a disease, but it could be. If you did not have the really healthy stand of grass right by the sidewalk, it would look more like disease. I would hit it with corn meal at 20 pounds per 1,000 square feet now and again in 3 weeks. If you don't see new grass coming up in 4 weeks, then get a commercial fungicide that works in your heat/precipitation zone - read the label closely to see how to apply and when. Corn meal has no restrictions on how or when. Then once you get the grass growing, zap the dollar weed (I assume dichondra or some other easy weed) and let it grow. And if you have not already raised your mower to the highest setting, do that yesterday.

Sorry: The correct links to the photos are below: https://www.dropbox.com/s/8quyn9oj77vzpxa/IMG_0270.jpg https://www.dropbox.com/s/7groe5umirdr2vi/IMG_0269.jpg https://www.dropbox.com/s/hwctx83ulp6qgkt/IMG_0271.jpg

a free show of mother nature... and some suggest a sign of good air quality ... enjoy it ... as to the rest.. first.. ID the tree ... here.. with pix of the leaves ... then decide if its a quality .. long lived tree ... then step back.. and decide if its overhanging anything of value.. like your life or your house ... maybe the neighbors.. if they are worthy ... AND THEN DECIDE IF TRIMMING IS NEEDED... if its a carp tree.. one basal cut at ground level.. solves all your problems ... in other words.. old, crumby trees may not be worth investing in pruning ... and my be one of the reasons the prior owners sold and ran away ... at this point.. you dont really need to spend money.. for the ID ... and that is where we begin ... and a pic of the whole situation... house.. tree .. etc ... will get you opinion if you need a certified arborist.. or a monkey with a chainsaw and insurance .... ken

tlbean2004, thank you for your response. I am located in Virginia Beach, VA. Our weather has been fluctuating a lot lately. A couple of the recent days have been very humid and in the 90's while other days have been cool 70's. We have also had spells of dry sunny breezy days and a couple rainy wet days. In regards to pests, I have found a couple of small "regular" spiders and one tiny red spider (spider mite?). I have removed all that I found, sprayed with insecticidal soap and have not seen any others for the last few days. Hopefully, someone here can identify the problem and has a cure. I am rather new to gardening and am learning as I go. :-)