refrigeration

So I try to include lemons in my diet.. often in the morning squeezed into warm water, but lately I buy a couple lemons and leave them around and within a week at least one turns completely green with mold.. then I have to throw them all out - and of course molds aren't good for you so I try to...

I have a full unopened bag of walnuts in the basement pantry and a half bag of almonds on the kitchen counter. I may need to move the walnuts to the freezer and the almonds to the fridge. I've heard of this before, but I've never acted on it. https://www.naturalnews.com/032187_nuts_storage.html

So, why do we keep our butter inside the fridge and keep it hard as a rock and let it break up our bread every time we try and spread it? Meanwhile, theirs was soft as butter and spread easily.

It always says refrigerate after opening....I never do...and I never have any problems with it.... do you refrigerate?