Henry's Red Rhododendron Henry's Red Rhododendrons have deep red flowers, much like Francesca, but on a smaller plant. Extremely hardy with upright open growth habit. Primary Color: Red Bloom Time: Midseason Height in 10 Years: 4' 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