MichiganDot
Answered on August 12, 2018
These are very similar roses developed by different breeders. Iceberg is hardy in zones 4-9 while icecap is listed for zones 5-9. Iceberg is approx 4 ft tall, taller than icecap which is listed as 2 1/2 ft tall. Both have 25 petals per bloom and both are considered floribunda shrub roses. I hope this helps.
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