Potatoe in barrel unsuccessful
I planted potatoes in a large barrel back in may. As the tubers grew I would top up with compost untill it reached the top.
In total I had 4 healthy plants sprouting. The largest started to die back so I decided to take the plaunge and empty it out.
However so diasapointed as hardly any potatoes, maybe 6 in total. I had an additional few that had rotted. I dont know if this happened because of the excess rain in london.
What have I done wrong? any ideas please