Do you have soaker hoses or drip line under that mulch, Toni? I don't know how any moisture would get through 18" mulch. When I water my trees, I have to move the 4" mulch aside or the only thing that gets wet is mulch. I can dig in the ground and it is dry dry dry.
We've had 1/2" rain today so far. I forgot and left the drip line running all night long on one bed, but it needed it anyway.
The roses have such vibrant colors now that it's a bit cooler at night. Probably this is how they look for everyone else all the time! Pinks and oranges in particular are stunning today. I will try to get some photos....