Pink WalloperPink Walloper Here is a plant from the famous Halfdan Lem that is really fantastic. It covers itself in May with gigantic flowers of white edged pink, and will grow to be 6 8 ft. tall by 10 12 ft. wide in 10 years. This plant will be one of your favorites in the garden. Premium Variety This variety has proven itself over time to be a higher grade plant with better performance, a higher degree of attractiveness, and is hard to find and purchase.