I have moved perennials with good success almost anytime of the growing season. I realized they say to transplant this or that at this or that time. But I have found as long as the transplant is tended to and kept watered very few don't adjust to a move.

Usually I would wait until the blooming period is over so as not to miss the blooms. Sometimes a plant will stop blooming when they are moved. But in this case, in front of your geraniums and dahlias, I think a move now would be in order.

If you can wait for a weather report of a rainy day coming, this is the best time. Not only are plants watered well but also the cloud cover helps with recovery.

I have also started doing something new when moving or receiving perennials from friends. I pot them up and let them grow on my porch for awhile. They are easier to keep watered and also this gives them protection from the harsh sun. Once the roots are established move them to their permanent home.

Bye, Diane