Cool and dark is best and I do have a door in my kitchen that goes to the basement. Since it's very nearly the same temp on the steps if the door is shut as it is in the basement I decided to have some wall bins added on the right side at the top of the stairway.
Taters & Onions Storage Wall Bins
This has been the summer of potatoes and onions so I needed a space to put them where they'd last longer.
Luckily we always seem to have scrap wood on hand but I'd think this should cost under $5 if you need to purchase some wood.
You'll need two end pieces per wall bin so once you determine the shape you'll cut them your table saw or a circular saw will work also.
Cut 5 to 6 slats per bin. This part is easy but be sure you put them close enough together that your veggies won't fall through. Ours were a tiny bit too wide for the smaller potatoes with 5 slats.
Once you clamp the slats/end pieces you can use the brad nailer to attach them.
Use enough nails that it is sturdy so go ahead and add more. This part is kinda fun
Our basement landing walls are plaster so we screwed vertical wood slats to the existing baseboard and a piece of wood midway up then attached the bins to that. Lucky us.
Most people don't have to deal with plaster like we have so you probably just use wall anchors to attach your wood bins.
It doesn't hurt to use a layer of newspaper in the bottom of the bins but make sure airflow is still good. Since our bins are 24" wide there's plenty of room to space things out.
Onions emit Ethylene gas which is a little heavy and I believe will drop so putting them below Ethylene sensitive potatoes makes more sense to me. What are your thoughts on this, does the gas rise or fall?