I have 5 flower boxes that I want to plant Diamond Snow plants in. The planter boxes are located on a wall approximately 8' away from our 2-story house. The boxes are on the east side of the house and receive sun on both the east and south side. There is also a large maple tree nearby that provides some shade. I've been feeding & watering the plants regularly and store them in the garage overnight, pulling the cart outside during the day as weather permits. In your opinion, when can I actually plant them in the planter boxes? I'm not looking to do it knowing that there's storms moving in, but would ideally like to plant sometime during the Memorial weekend if it's safe to do so. Thank you for any advice you can give me. The service that all of you have provided me with has always been 'spot on' and you're providing a great service to those of us who need your advice. Thank you!