That was a nice pit stop. I never stopped there myself when I was cruising down I-80, but it looks like I missed out! That's a beautiful botanical garden, they have a talented gardener who picked out the color combos.
Congratulations on the five states added to your travels together. I only have a couple states left that I haven't visited, I guess I should make a point to finish up the 50! Renting was a great idea, no need to put that wear and tear on your car.
Can't wait to see the pictures from the rest of the journey!