Color: Pink Flower Size: 1-2″ (3-5cm) Flowering Period: April & May Mature Height: 6-8′(2-2.5m) Pruning Group: A Planting Aspect: Sun/ Partial Sun/ Bright Shade USDA Zone: 3 Foliage: Deciduous Suitable As Ground Cover: Yes Price Group: 2 About Alpina Willy Willy is pale mauve-pink with darker pink at the base of the flower. Alpinas perform well in light conditions ranging from bright shade to hot sun. Also, they can be used as a climber, rambler or ground cover. Their delicate flowers are followed by attractive seed heads. These attributes make this hardy species one of the easiest and most versatile types of clematis to grow. Pruning group A.