For four seasons I have been cutting a lawn on an as and when basis with the brief of just keeping it reasonably tidy.
There is a patch in it which I always assumed is where the concrete mixer stood and was washed out when the house was built.
This year the weather has wrecked the less than perfect lawn, so I decided to dig a hole in it this afternoon to confirm what I thought and sure enough when the house was built in 1967 six inches of top soil was thrown over the concrete mixer washing, so there is a pad of rough concrete roughly three metres square under the lawn.
In the ideal world the top soil would be stripped, the concrete removed then the top soil put back and graded, but it's not an ideal world.
Three years running I have raked it over and thrown some seed on it, it takes and looks okay then the patch starts to dry out, this year it was inappropriate to water it and now it's just a mess.
I have a Kango, I am pondering putting a long chisel in it and working across the patch breaking up the concrete underground without actually digging it out.
What do you think the chances are of the grass establishing in six inches of top soil once the concrete underneath has been broken up, assuming the Kango does the job?
Bear in mind, it's been like this for fifty five years and no one is looking for perfection.
It could be an old disused water well with a concrete cap on it. Go steady. My father's got one in his garden.
If they aren't bothered about bowling greens you are wasting time and money. Plus you don't know it is a concrete pad it's just guess work. I'd say 2 options.
Leave it as it is
Dig it up and remove the concrete.
Been here in the past... make sure the client is up for the bill beore you discover a nightmare.