Penstemon Ice Cream Collection This collection comprises of three magnificent Penstemon varieties that are much-loved hardy perennials! These will definitely deserve centre stage in any garden they grow in! These show-stopping tubular flowers emerge in summer in an abundance of glossy, semi-evergreen foliage. The long-lasting blooms of Penstemon \'Ice Cream Collection\' flower well into autumn, when other garden plants are past their best! Low maintenance and easy to grow, these tolerate most positions in the garden, even through rain or drought, and they are pretty resistant to slug damage. What is there not to like? Height: 80cm (31). Spread: 45cm (18).