I purchased 3 peonies plants at Costco this summer. I live in Thousand Oaks, CA, 45 miles up the coast from Los Angeles. The tag on the plants said shade to partial sun so I planted them in the front yard with a western exposure under a birch tree. They were about 2 gal size plants. It wasn't very hot this summer but they were having burned leaves. Then, at the end of summer it got very hot and they really fried! The leaves are all dead on one plant but the stem is still green in the center. The one that was in the most shade is in the best shape. I transplanted them today into large pots and put them in the shade in potting soil and watered them well. I was wondering if they belong in the shade or in some sun.