Yes, it's easy to rehydrate too-dry bud, and it's also easy to cause mold. Anything wet, like citrus, lettuce, etc. will make the air in the container humid, but you must not let it touch the bud. And you need to remove it in 12-24 hours and reseal the bud without the wet stuff. You could use a small piece of bread. The best way is to just add some fresh leaf, and that can mingle with your bud without worry.
take a piece of bread about the size of a beer can bottom per ounce and place it in a zip lock bag or jar over night bud will be nice and moist in the morning with no fruit taste that fruit can leave
I bought an ounce of maui wowie and it sat in my car in the Texas heat and totally dried out, threw in some lemon and orange peels for a bit and they fluffed back up... After a week some of the buds smelled like cat piss... Mold ????
one of my buddy's stores the main stalk after the trim in a zip lock in the fridge, incase the drying bud happens to get to dry. He can take a stalk from the fridge and put it in the jar with the crispy buds.