A historic large cup, Kilworth has pure white petals with a yellow to deep-orange cup that casts a gentle orange shadow. If you look him straight in the eye there is a brilliant flash of green where the filaments meet the tube. No kidding, an offspring of Hades. Quite colorful, Kilworth is a fecund fellow, with many red cupped offspring. Glorious in the landscape and capable on the bench. Many awards over the years. Pollen and pod fertile.