Hi maneatingmoo, where abouts are you at in Michigan, i leave most my plants outside by my pond durring late spring and all summer with exceptions of really bad weather they come in, we get super high winds and hail along with very hard down pours, with us being in the woods and all the tree branches that fall i bring my plants in till its nice out again i cant take any chances of anything falling or smashing my plants let alone them being washed away from such heavey down pours. We just got over having really BAD storms along with funnel clouds and tornado's bad bad flooding, i have spent the whole day out cleaning up around my pond and tending to plants that got damaged, had to clean the whole pond and filter and water fall/cascade, tree branches down everywhere and the yard looks like a flood went thru it. Im glad i got all my CP's in that night befour we had to leave here in a hurry to take cover at my daughters basement. Anyways its best to have them outside.