The pool water is a surprising 60 degrees.
Your zone is ahead of us. We don’t really have any thing like that yet. We too have a lot of trouble getting fruit due to spring frosts, even when the tree is not too close to the walnut tree.
I was shocked to receive photos last week from South Carolina of my granddaughter and her date for her high school Military Ball. (She is Jr. NROTC.) She was chosen Queen (brag, brag), she was beautiful in a floor length purple gown, & her date was handsome in full military regalia. But the SHOCK was that they were posed in front of a BLOOMING deciduous magnolia! (lavender blooms, beautiful with the purple dress) I was SHOCKED because we still had several inches of snow in our yard and 2 foot banks piled up where it had been plowed around the driveway.
Second shock is that I did not realize that deciduous magnolias grew in the south. I thought that was a Wisconsin favorite, and ours won’t bloom until May. Spring IS on the way. I’m SO ready.