Penstemon Strawberries & Cream (Icecream) Part of the popular Ice Cream series Penstemon \'Strawberries & Cream\' will not disappoint. Sitting atop a sturdy stem, its white trumpet-shaped flowers are delicately speckled with distinctive pink and red markings. Long-lasting, they will flower well into autumn, after many other garden plants have finished blooming. Undemanding and easy to grow they are ideal for adding colour and encouraging wildlife to your garden.