Flower Color: Yellow Flower Form: 3-4″ (8-10cm) Double Flowering Period: Summer – Fall Mature Height: 7-10′(2-3m) Pruning Requirement: Light Pruning Planting Aspect: Full Sun Cold Tolerance: USDA Zone 5 Price Group: Standard About Rosa Leverkusen Fully double flowers early summer then sporadically through until fall. If a compact plant is desired, prune hard in February. Slightly fragrant.