I've recently been renovating a small section of my lawn, which is going relatively well. I now would like to overseed the remainder of my lawn, which has many bare spots and is quite bumpy.
My question is: how should I prepare my existing lawn?
I'm listing some of the options I'm considering:
1) dethatch by hand, broadcast seed
2) dethatch with a power-rake with spring tines, broadcast seed
3) use an overseeder (the rental rents a turfco LS20)
What would be your preferred method?
I'm in the Boston metro area, zone 6b. Apart from watering after seeding I didn't really water the lawn. It's cool season grass. I don't know which kind. The neglected lawn was already here when we bought the house 3 years ago. I've spent the last 3 years renovating the inside and now have some time to start addressing the outside. I haven't fertilized either, but will begin doing so.
As requested in the comments, I'm uploading some pictures of the lawn. This forces me to "explain" a little bit. I have 2 rectangles of lawn that I seeded this summer. Because of this, I had to water to enable germination. This brought back some of the lawn from dormancy. The remainder of the lawn stayed dormant all summer, and has shown little sign of coming back to life. If you are observant, you'll see a semi-circle of green grass at the top of the picture. This is a patch of bermuda grass that I'm experimenting with, to see if it survives the winter (see one of my previous posts).