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These famous, resilient perennials deserve to be displayed prominently in the garden or on the patio. Their pink bells with satiny white throats dangle above semi-evergreen foliage. Penstemon 'Laura' has great stamina and tolerance to rain and drought. This allows it to flower for an amazing five months each year. Pensham penstemons are also resistant to slugs and have semi-evergreen foliage, giving them an all-around stunning performance for many years. Height: 90cm (36). Spread: 45cm (18).