You might be surprised to learn that the DABG (in Iowa) has a cactus garden

However, our cactuses don’t stay outside during the winter months. With each plant set in an individual pot of lime and crushed stone, our volunteers move them from the Cactus Garden -- pots and all! -- into our heated greenhouse every October. Then, about the first of May, they bring them back outside and re-embed them in the sand. The DABG does have one type of cactus that can survive the winter: the prickly pear.