I've only done leaf lettuce........and like spinach it does not like hot weather. I'm planning on putting some more in next week.
Do you freeze your potatoes? If so, how? I've never heard of freezing potatoes except in already cooked dishes.
You can freeze potatoes if you wash and chop/slice them. They can get a bit mealy when frozen uncooked so I don't usually freeze mine - I keep a root cellar and put them in bins.