Moni, Yes....raw beets don't freeze very well, cooked is how they are normally frozen. Just slice or quarter, put into zip lock bags, date the bags. If you have room, you can freeze them on a cookie sheet first so they don't stick together, put all in one larger bag and only take out what you need for dinner. Little beets, cooked, can be frozen whole.

ETA: Cook until tender, not just blanched

Yes, a long time ago. But they weren't fully cooked. I had asked the home extension agent if beets could be frozen she said no. So I proceeded to blanch them, peeled, sliced, and put in jars and covered with water. Froze them. They were only in the freezer a couple of months, but they were fine. There was some difference from fresh in the texture, but they tasted like fresh cooked. I honestly don't remember if I froze any that were fully cooked. I kinda-sorta think I remember trying a few, but the texture was really wonky. Which was why I tried the blanched method. I didn't have a canner to can them in.

Sorry, this isn't any help to you, I know. But I'll be anxious to see how others answer your question.

I gather from your post of the petunias that you didn't take in a room mate. Hope you have a very safe, and enjoyable trip. It honestly boggles my mind!

Rusty

ETA: Morz, apparently you posted while I was typing. This was back in the early 70's. I'd never heard of roasting vegetables back then, nor of freezing vegetables without liquid to cover them. Times sure have changed since then! And food preservation methods are so-o-o-o-oo much better now!