the leaves of my pink turtlehead have black spots on them, turning brown and curling up on the edges. The plant is currently in bloom. We live in Blaine, Washington.
Tiny Tortuga Turtlehead
Certified GKH Gardening Expert
This sounds like a fungal leaf spot. You can apply fungicides to try to help. Increasing air circulation around the plants is also recommended.
Here is an article with care information.