Iceburg Details: Plant Facts Height/Habit : : Floribunda, medium tall, bushy Flower Color : White Fragrance : Moderate Disease Resistance : Very Good Petal Count: 20-25 Zones : 5 - 9 About the Iceburg : The Iceberg rose has plenty of long, cool-white buds that open as large, double roses on this Floribunda. The light green glossy foliage makes a perfect backdrop for these clean white blooms. For forty years Iceberg has been the standard against which many roses are measured. That's because the plant produces masses of icy white high-centered blossoms continuously from frost to frost, Iceberg roses are a World Federation of Rose Societies Hall of Famer inducted 1983.