All, As the title mentions, I have a couple of problems in my lawn. Some feedback or hints are appreciated. Problem 1 - Bald spots I recently seeded a new lawn. The grass did not grow evenly everywhere and the weeds seemed to grow faster then the grass. After two months (or something like that), I used some weed killers for newly seeded lawns. This made the bald spot problem even worse. Bald spot problem after weed killer So I went to the local gardening store. And they told me that I should fertilize. Which I off course did. I also bought myself a robot mower. Although I didn't buy it to solve this problem, it has the added benefit that the grass is cut more regular. Which in turn means that all the grass sprouts have the same length (and they get the same amount of sun). Before, some patches were growing faster and "stealing" the sun from neigboring grass sprouts. Also, the robot mower mulches instead of cutting (also fertilizing the grass). After fertilizing + robot mower (1 week) 1 week after I bought my robot mower and I added some fertilizer, my grass is already looking much better. Nice green and thick grass. Only there are some bare spots left. The questions I have are: Will the bare spots eventually disappear ? Will the grass "expand" over time? If not, can I: Get some fertilized soil mix in some grass seeds scarify/rake the bald spots Mix the soil+ weeds into the bald spot Or is there another way to get rid of these bald spots? Problem 2 - Yellow spots As mentioned above, I bought a robot mower last week. I also went on holiday last week and when I came back, I had a nicely cut lawn but also a couple of yellow spots. I am assuming this is because of the robot mower because I didn't have these spots before and it's located near the boundary wire. Question: anybody an idea how to solve this ? And why it happens ? Is it because the robot mower has more difficulty turning at these points? Can I solve it by moving the perimeter a little bit ? Problem 3: bad ground quality Some background info on this problem. When I bought this house (garden), there was a border of bricks in this part of the garden (in the picture it's the the arc where no gras is growing.). I removed these bricks and there was like some hardened foundation. I thought there was enough soil left between the foundation and the surface to not have any problems. But it seems I was wrong. So here the questions is: Can I dig out the hardened foundation and then re-seed this part of the garden? Or can I somehow make this part better without removing the foundation? As there are some nice and green plucks of grass which did grow on the part with foundation. Maybe it's possible but it will give again problems in summer when there is not enough soil to draw water from ?