Most commonly used in large borders, however it is just as valuable as a focal point in proper circumstances. Overall, because of its broad evergreen foliage it provides some colour in winter months to the otherwise plain garden.
|USDA Hardiness Zone
|Canadian Hardiness Zone
|-29 - (-34)
|-20 - (-30)
|This broadleaved evergreen is one of the hardiest of all the rhododendrons. Purple flowers, leaves are dark green 7.5-16 cm long 2.5-5cm wide, aromatic if bruised.
|Place in a partially shaded area with little to no wind. Ensure soil is acidic and well drained to prevent root rot. Place ample mulch around planting site, supercharge before winter, to protect from snow build up.
|Taller than wide but still presumes a rounded form. Very dense foliage and form.
|Broadleaved evergreen, narrow leaf form with dark green, upper leaf surface and lighter green underside. Very aromatic if bruised, Bark is yellowish green on younger growth, eventually turns to a dull brown.
|Botryosphaeria canker, crown rot, dieback, damping off, Japanese beetle, giant hornet, Asiatic garden beetle, lace bugs, rhododendron aphids, powdery mildew, rust, azalea stem borer, leaf scorch, shoot blight , may all be problems.
|The Alleghenies, West Virginia southwest to Georgia and Alabama.
|Yellowish green on young growth turning to a dull brown with maturity.
|Flower/Leaf Bud Description
|Vegetative buds are large to 1cm long, scaly, pointed and yellowish green. Flower buds are 3 cm-5 cm and a rose colour.
|Alternate, simple, evergreen, 7.5-16 cm long 2.5-5 cm wide, rounded base, dark green topside, light green underside, leathery texture, petiole 1-2.25cm long.
|Light purple sometimes with a hint of rose. Green or yellowish brown markings on inside of corollas. 3.5-6cm wide flowers. Flowers late April to mid- May.
|Dehisent, 5-valved capsule; light green in colour turning to yellow once opened. It is a large capsule at the tip of petiole.
|Dark green leaves in spring, summer and autumn but turns a lighter green over winter, the bark turns yellowish green in the winter months and eventually brown once maturity is reached.
|Medium-coarse year round.
|There is a high success rate when sown by seed, cuttings show variations in rootability. Collect cuttings in mid August for the highest success rate. To increase success rate in cuttings use rooting hormone that includes a fungicide.