Master Gardener Decision Support Guide

Woody Ornamentals

Bradford Pear

Short cuts for Bradford Pear 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:

Caterpillars or moths
Acrobasis indigenella, leaf crumpler
Apterona helix, snailcase bagworm (garden bagworm)
Archips argyrospila, fruittree leafroller
Archips roaanus, leafroller
Archips semiferana, oak leafroller
Lithophane antennata, green fruitworm
Malacosoma americanum, eastern tent caterpillar
Malacosoma disstria, forest tent caterpillar
Phyllonorycter spp., leafminers
Schizura concinna, redhumped caterpillar
Mites
Eriophyes (=Phytoptus) pyri, pearleaf blistermite
Eotetranychus carpini, yellow spider mite
Oligonychus newcomeri, spider mite
Borers
Scolytus rugulosus, shothole borer
Xyleborus saxeseni, ambrosia beetle
Xylosandrus crassiusculus, Asian ambrosia beetle
Synanthedon pyri, apple bark borer
Scales (seldom regarded as a problem of Bradford pear in NC)
Aonidiella aurantii, California red scale
Eulecanium cerasorum, calico scale
Hemiberlesia rapax, greedy scale
Icerya purchasi, cottony cushion scale
Lepidosaphes ulmi, oystershell scale
Parthenolecanium corni, European fruit lecanium
Pulvinaria innumerabilis, cottony maple scale
Saissetia oleae, black scale
Aphids (seldom regarded as a problem of Bradford pear in NC)
Aphis craccivora, cowpea aphid
A. pomi, apple aphid
Other
Asynonychus godmani, Fuller rose beetle
Cacopsylla pyricola, pear psylla
Frankliniella tritici, flower thrips
Glossonotus acuminatus, treehopper
Lygocoris communis, pear plant bug
Lygus lineolaris, tarnished plant bug
Pseudococcus comstocki, Comstock mealybug
P. maritimus, grape mealybug
Siphoninus phillyreae, ash whitefly
Taeniothrips inconsequens, pear thrips
Tremex columba, pigeon tremex horntail

Diseases:

Agrobacterium rhizogenes, hairy root disease
Alternaria sp., leaf spot, fruit rot
Botryosphaeria dothidea, canker, dieback
Botryosphaeria obtusa, dieback, canker, fruit rot
Botryosphaeria rhodina, canker, twig blight, fruit rot, leaf blight, gummosis
Botrytis cinerea, blossom blight, spur blight
Cerrena unicolor, rot, canker rot
Coniothyrium sp., leaf spot
Diaporthe ambigua, canker
Diaporthe perniciosa, canker, dieback
Diplocarpon mesplii (Entomosporium mesplii) Entomosporium leaf spot
Elsinoe piri, spot anthracnose
Erwinia amylovora, fire blight
Flooding
Ganoderma applanatum, conk
Gymnosporangium globosum, hawthorne rust
Gymnosporangium clavipes, quince rust
Gymnosporangium clavariiforme, rust
Glomerella cingulata (Colletotrichum gloeosporioides), leaf spot, blossom blight, canker, dieback
Hendersonia sp., leaf spot
Heterobasidion annosum (Fomes annosus), Annosum root and butt rot
Leucostoma sp., canker, twig dieback
Nectria cinnabarina, coral spot canker
Phelllinus igniarius, trunk and limb rot
Phyllactinia guttata, powdery mildew
Podosphaera clandestina, powdery mildew
Pseudomonas syringae pv. syringae, leaf spot, blossom blight, shoot blight,
Schizophyllum commune, sapwood rot

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Master Gardener Decision Support Guide