EPD, There are only a couple photos of Buddleja Royal Purple in the NGA database and no listing for Flower Power at all that I could find in those 16 pages of Buddlejas. Submit and grab your opportunity for fame and acorns!
I nearly bought a buddleja a few weeks ago, but the weather was so unbearably hot at the time I figured I was courting failure by trying to plant anything. I have a perfect spot just waiting for something big, colorful and bee- and butterfly-loving.
One of my Perovskias is also sprawled all over from the recent storms. They grow more compact with reduced irrigation (like, almost none), and the sprawly one gets runoff from nearby pots. Another grows in a crowded, neglected spot directly next to the compost bin: much denser, but also a different variety, so I don't know if it's a different growth habit or location.