These shortages will have prepared us for something like that, at least a little. People will already be finding ways to make for themselves anything they might need.

[Except for Roland, who is abandoning his plants and chickens and entire steady food supply that he'd been building up specifically in case of a siege, for... totally logical reasons.]

Between you and I and a little luck, we should be able to keep our own supply going. As long as neither of us has trouble with the same plant at the same time, we'll be alright.