What is the proper way to store leaves from a dining room table? I've read one opinion that says they should be stored upright, yet another says they must lay flat.

Hi Dierc17 C, Storing solid wood table leaves in attics or basements will result in extreme expansion or contraction. The argument about storing leaves upright or flat is not as important as storing them in the correct environment. For instance, most experts agree on flat storage, apron side up. But flat on the basement floor is bad. Flat under the bed in your bedroom is good (as long as your bedroom is not in the basement on a concrete floor). Experts agree upright storage leads to warpage. Upright in the attic or basement will surely result in warpage but upright in the closet may not. Most closets have room to stand leaves upright but not flat. If you have space in your closet for either method most experts would say flat but that could lead to damage if you place anything on them. If you have to use a closet the best solution is to place them on edge with the dowel pins facing up. Hope this helps!

I think storage needs to be upright,if possible in a storage frame.