Posted: 01/04/2015 at 15:38
Do you know the history of the garden? Could anything have been dumped there?
My garden was used as a dump for years
Now, after more than 20 years there are still areas where I wouldn't plant anything important. During that time it's had compost, horse droppings, wood chip mulch and assorted fertilisers. One area was the home of the compost heap for two years, today there are nettles growing there and they are yellow and sick looking.
Some oil based dumpings take a long time to disappear