Fire Storm Rhododendron Fire Storm Rhododendrons have huge numbers of red buds open to deep red flowers. Growth habit is mounding to a shrub that is wider than high. Primary Color: Red Bloom Time: Late Height in 10 Years: 3' Hardiness (Temperature): -25 Sun / Shade: Morning Sun, Afternoon Shade Landscape Category: Shrub Genus: Rhododendron More plants in: Hybrid Rhododendrons Find out if this plant is available: Rhododendron and Azalea Availability List