campanula whats it like to grow celeriac and potatoes? Have you grown these? Got to admit doomsday prepping is a reason at the back of my mind for wanting this
You could grow some potatoes right now, Froggy. It is traditional to grow some potatoes in pots, for harvesting at Xmas. People use a compost bag, dustbin, large trug, half-filled with potting mix (anything will do). There are usually specific varieties such as Carlton, which are grown for Xmas potatoes, but I suspect any second early will do. I have not used ordinary spuds for seed potatoes but as an experiment, I would be tempted to try with some Charlotte or try and blag a few second earlies from other plot owners who will be currently harvesting this years crop.
With a good sized container (you need at least 30 litres capacity), fill the first 3rd with soil and place 2-3 potatoes on top of the soil. Top up the container by another 3rd and water generously. After a week or so, the potatoes will sprout and topgrowth will appear. As it does so, add more compost to keep covering the lengthening haulms until eventually, the pot is full. Allow the potatoes to grow away for 8-10 weeks until the foliage starts to go yellow and flowers have finished. Be generous with water and add a little granular fertiliser (spuds are greedy crops). By Xmas, you should be able to tip the container over and harvest your Xmas dinner.
Celeriac is also a reasonably easy crop but will need a lot of water. Last year, I grew celery for the first time (glad I wasn't growing it this year). Had to be on it with continual irrigation. Celeriac is usually sown around March/April.
Seriously, growing home-grown potatoes is an epiphany - the taste and texture of your own potatoes is totally worth the effort involved (and they do require effort...and water). I have never missed a year of growing them.