I purchased a 1 yr. old Rhubarb Plant ,and planted in full sun area, first 3 days we had heavy rain, then 5th day we got into the 80's, and the leaves curled in the afternoon. This morning the Rhubarb looks fine, but it will be over 90 degrees today, wondering if I should move the plant to a less sunny location before it get established. We live in Colorado and the sun is intense during the summer, but the planting instructions said full sun??