Maybe E. grandiflorum, the flowers are actually yellow and the leaves have no mottling.

I don't know the timing for bloom in Duluth, but there is a way to preserve peonies. Pick them at golfball stage, before blossom break. When you need them, snip the ends and put in water, strip the leaves, dip the cut ends in melted candle wax, wrap the stems in damp newspaper, put in plastic bags and refrigerate. They can hold for maybe 4 months. I believe there should be no fruits in the fridge with them. I also don't remember if the buds should be wrapped in damp paper. It's been a while since I had enough flowers to do this. A web search might give you more information.

I'm a builder and building inspector and have installed or inspected close to a thousand precast 'superior' walls foundations. Superior walls are stronger than block or poured concrete walls being engineered to 5000 psf or greater. Because of the density of the concrete, the walls are tested and listed to be installed without waterproofing or dampproofing. Superior walls and other similar types of precast foundation systems come pre-insulated. Superior walls come with built-in "studs" that make up the walls. There is no therefore no additional requirement to frame walls with Superior walls if one wishes to finish the basement. These studs and plates come pre-bored for ease of bolting on plates and pulling wire cables. Wall sections can easily be cut to add windows or door openings after installation...or bored for utility installations. Dollar for dollar pre-cast walls are much cheaper than conventional walls, are stronger, and afford the easiest installation. And while pre-cast wall systems, like block or concrete foundations walls also cannot be installed on frozen soil, Pre-cast concrete walls provide the most consistent, lowest risk, and safest winter installation possible. In my experience, pre-cast walls systems are superior to block and concrete without doubt.

Wonderful ending to a stressful day...Peacefulness....Wishing a speedy recovery for DH, you and family! Juanita