It's interesting, sort of, how spot overseeding seems to work (or not work) depending on factors that I'm not completely sure of. Quality of the soil, shade or full sun, soil temperature &c I'm sure play a role in germination but it seems like sometimes there is no rhyme or reason. Some areas respond well with the same conditions and take off like a rocket without much handholding, and others don't do anything despite my best efforts. I'm hesitant even after several weeks to put down additional seed as heavy rates tends toward overcrowding, were all of it suddenly to germinate somehow.

One area that has me stumped is near a Colorado Blue Spruce. I keep it pruned up a bit, with a landscape brick around the drip line and mulch inside. Just outside the brick, still within the drip line area are some patches and thin spots where I've irrigated, fertilized, seeded, etc regularly, and nothing seems to grow, or not vigorously. It just doesn't seem to respond the way turf should, by filling in and thickening, tillering etc. This is normally a reasonably fast (and gratifying) process, add more fertilizer, more rain and irrigation, frequent mowing - success! Yay!

I'm guessing the tree roots are sucking up all the good stuff? We've had a dry summer. I have a root feeder stake deal for water hose that I could employ to really give the tree a dose of water down deep. This would be a good time for the tree to put some away for winter? Maybe that would leave more water and nutrients for the turf?