Red Penstemon Flower
The back of the border gets extremely dry and sun-baked in high summer. The soil is quite sandy, too, and the large gum trees in the Hump are too close for comfort.
A Hot Border?
My specially purchased red dahlia Bishop Llandaff used to grow next-door to the red Penstemon, together with a random patch of bright orange Calendulas and other self-sown dahlias. If I had been better organised I could have turned this area totally into a 'hot colours' border. Hmm...