I had to give up my allotment some time ago due to a serious back injury but am now trying to grow what I can in pots and containers. I have a few cat litter trays which were used for starting off leeks and am wondering if they would be deep enough to grow cut and come salad leaves? I’ve also got some Paris Silverskin pickling onions, unsure of what depth they would need.
I am testing a parsnip growing method. I have an old storage box 24”x 14”x 14”, drilled holes at bottom and filled two thirds with compost. I have cut the tops and bottoms off 20 2litre soft drink bottles and placed them upright on the compost, filled them with compost and sown the parsnip seeds on top. This gives a total depth of nearly 19”. Trying Guernsey a shorter variety.