NC Cooperative Extension   Service

Master Gardener Decision Support Guide

Woody Ornamentals

Azaleas


Shortcuts for Azaleas Answers

The following problems are listed for this plant and were considered when developing the diagnostic key. If the caller provides accurate answers to the questions, the ones that are linked should key out to that specific problem. The unlinked problems are expected to key to the point where the caller is asked to submit a sample. These samples will often require diagnostic procedures such as soil testing, pathogen culture, Elisa or other test beyond the resources of the average Master Gardener Volunteer or County Extension Agent.

Insects:
Beetles:
Callirhopalus bifasciatus (twobanded Japanese weevil)
Otiorhynchus sulcatus (black vine weevil)
Popillia japonica (Japanese beetle)

Rhadopterus picipes (Cranberry rootworm)

Caterpillars:
Archips argyrospila (fruit tree leaf roller)
Datana major (azalea caterpillar)
D.ministra (yellownecked caterpillar)
Hydria undulata
Lithophane antennata (green fruitworm)
Olethreuts cespitana
Ptycholoma peritana

Mites:
Brevipalpus obovatus (privet mite)
Oligonychuc ilicis (southern red mite)
Tetranychus urticae (twospotted spider mite)

Scales:
Aspidiotus nerii (oleander scale)
Duplaspidiotus claviger (camellia mining scale)
Eriococcus azaleae (azalea bark scale)
Hemiberlesia rapax (greedy scale)
Pseudaonidia paeoniae (peony scale)
Pulvinaria ericicola (cottony azalea scale)

Others:
Oberea myops (azalea stem borer)
Synanthedon rhododendri (rhododendron borer)
Pealius azaleae (azalea whitefly)
Stephanitis pyrioides (azalea lace bug)
Graphocephala coccinea (red banded leafhopper)
G.fennahi (rhododendron leafhopper)
Caloptilia azaleela (azalea leafminer)

Diseases:
Agrobacterium tumefaciens (Crown Gall)
Exobasidium sp. (Leaf and shoot gall)
Meloidogyne sp. (Nematodes)
Ovulinia azaleae (Petal blight)
Phomopsis sp. (Phomopsis blight)
P. rhododendri (Phomopsis blight)
Phytophthora sp.(Phytophthora root rot)
Pucciniastrum vaccinii (Azalea rust)
Powdery Mildew
Secondary leaf spot
Lichens

Environmental:
Winter injury
Normal leaf drop


Return to Azaleas, Woody Ornamentals, Master Gardener Decision Support Guide


Designed by David Goforth on December 30, 1997.
Contents modified on August 20, 1998.
Contents checked on December 30, 1997.