The majority of Primulas are rosette or clump growing herbaceous plants. Primula marginata differs. Take a look at the plant growing in the trough within the alpine area. Stocky upright perennial stems of many years growth terminate in a cluster of flowers and foliage. The leaves, as they emerge, show a distinctive serrated edge, the flowers are lavender pink with a white centre. A native to the French and Italian Alps where it grows on limestone. When the plant needs a refresh, cut back the stems, which are botanically rhizomes, to ground level where you will observe green buds ready to regenerate.