Rhododendron
Rhododendron ponticum
Ericaceae · broadleaf evergreen shrub · introduced
Last updated
Data Maturity Structured
This profile synthesizes data from multiple published sources. Expert field review is in progress.
Quick Facts
Light
Part Shade
Soil
Moist
Water
Moderate
Hardiness
Zone Zones 6a–9b
Diseases (25)
Armillaria ostoyae Armillaria Root Rot Botryosphaeria dothidea Botryosphaeria Dieback Botrytis Petal Blight Seifertia azaleae Bud Blight Rhododendron and Cutting Rots Cylindrocladium scoparium Cylindrocladium Blight and Root Rot Pestalotiopsis sydowiana Gray Blight Leaf Burn abiotic (drought, heat stress) or bacterial (Xylella fast... Leaf Scorch Symptom category — not a single disease Leaf Spot Exobasidium vaccinii Leaf and Flower Gall Lime-induced Chlorosis Xylella fastidiosa Marginal leaf necrosis Rhododendron necrotic ringspot virus Necrotic Ringspot Ovulinia azaleae Ovulinia Petal Blight Physiological leaf spot Phytophthora Blight and Dieback Phytophthora Blight Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew Ramorum Blight (Sudden Oak Death) Thekopsora minima and Naohidemyces vaccinii Rust Salt injury Sunburn Tissue Proliferation Taphrina wiesneri Witches' Broom
Pests (19)
Aphidoidea Aphid Stephanitis spp. Azalea and rhododendron lace bug Acanthococcus azaleae Azalea bark scale Caloptilia azaleella Azalea leafminer Nematus lipovskyi Azalea sawfly Cacoecimorpha pronubana Carnation tortrix Lepidoptera Caterpillars Icerya purchasi Cottony cushion scale Tingidae Lace bug Parthenolecanium spp. Lecanium scale Choristoneura rosaceana Obliquebanded Leafroller Stephanitis rhododendri Rhododendron lace bug Dialeurodes chittendeni Rhododendron whitefly Otiorhynchus spp. Root weevil Tetranychidae Spider mite Nematode, Stunt Root Rot (Phytophthora spp.) Stephanitis pyrioides Azalea Lace Bug Coleotechnites huntella Rhododendron bud moth
Cultivars (1)
'Variegatum'
Common name: Variegated Pontic Rhododendron; Mature height: 4–5 ft