I bought the house new in April of 2007. There was nothing but dirt in the back of the house at that time. We negotiated with our builder to put sod in the back yard at the time of purchase. At that time I didn't have the knowledge or forsight to ask for a specific type and cultivar of sod. Therefore, I have no idea what grass types and varieties it consisted of. Despite my best attempts at watering the sod, it never really took off the first year. By the middle of June in the second year, it was evident that it needed some help. This is when I learned about elite KBG cultivars. At that point I stopped watering the backyard for the rest of the summer. By the time the middle of August rolled around, the backyard was fully dormant / dead. I then rented a dethatched and ripped up as much grass as I could but running it at a very deep setting. After that, I mowed at the lowest setting with a bagger. Finally I slit seeded the KBG cultivars Midnight II, Bedazzled, Freedom III, and NuDensity at the reccomendation of Seedsuperstore. By June of the next year, the lawn looked a million times better and has only gotten better looking each of the two following years as I learned more, switched to organics, and started applying more iron.
Now that you have the history, here is my question. In the pictures below you can see that the lawn is "lumpy". Could there be rye grass or fine fescue still alive from the original sod, or does it appear that the mixture of KBG cultivars I seeded with don't grow at an even rate? I realize that this might be impossible to determine with pictures, but I can take close ups if needed.
Album Link (Larger Pictures)
I just wish it was a bit darker, but a pH of 7.5 makes that difficult.
