Penstemon heterophyllus 'Electric Blue'
This is a stunning half-hardy perennial which does really well in hot parts of the garden and loves well-drained soils. Small bushy mounds of shiny metallic-green strappy leaves, and spikes of tubular bright blue flowers which are very attractive to bees and other small insects. Free-flowering and puts up even more flower stems if kept dead-headed. Full sun. 40cm x 30cm. 9cm pot.