Can this lawn be saved? (Organically?)
I'm a first time homeowner, so Im trying to learn the ropes quickly. We've had our house for a year and in that entire time have not used lawn chemicals or weed suppressants. I mostly pull weeds by hand when possible. We mow high, use a mulching mower, water deeply and infrequently...the things I've been learning are good practices for lawns.
I just dug soil samples and will send them off for a soil analysis. After taking off my samples I will use the rest I dug to do the "jar" test for the soil components.
My concern is that during the awful drought this summer our sprinklers didnt seem to be getting full coverage, so parts of the lawn died off and were rapidly filled in with weeds. It has advanced beyond what hand-pulling weeds can handle. So I took our map of the house and marked off where weeds are. Dots are sparse, solid areas are tons of weeds.
Green is clovers
Red is some sort of thyme like thing I havent yet identified
Blue is crab grass
Yellow areas are more barren dried ground areas.
The main yard is still pretty good except along the sidewalk. The areas between the sidewalk and street are more weed than grass (though some sparse grass is still throughout).
I have no idea what to do. Do I treat it with weedkiller, overseed with grass seed and then go back to trying to be organic next year after good grass coverage is established? Or should I put down some kind of black plastic and try to solarize the whole area and then overseed? I'm nervous about seeding because there is a 15x15 area in our backyard that was clearly reseeded by the former owners but they used a different seed than was used in the rest of the lawn, so it looks differently, grows differently and is a giant pain in the butt. Is it really possible to get a near perfect grass match if you can ID the grass type?
Thanks for any help or advice you can offer!