Bloom Time: Early Rhododendron Species Botanical Garden Henry's Red Rhododendron, Rhododendron x 'Henry's Red' (H 1) Rhododendronblte in der historischen Grtnerei der Familie Seidel, Grngrbchen, Schwepnitz, Sachsen, Deutschland *** Rhododendron blossom in the his Stock Photo Alamy Did you know that you can use rhododendron in your flower arrangements? They actually last a long time, and do an amazing job at adding substance and structure to your vase. Hydrangeas Gympie Stinging Tree (Dendrocnide moroides) iNaturalist