Please consider this widget will only give a rough guide to how much compost you'll need. The calculation is based on the pot being truly cylindrical, which it probably isn't. It does not allow for settling and compression of the compost, but that is probably compensated for by the chamfer of the pot. In short, we accept no responsibility for the results of this form, we only provide it for use as a guide.
Baytree Garden Centre 01406 370242