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NC State Extension

BOLO December

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Month-by-month lists of common plant diseases, pests, and other problems you may encounter in North Carolina yards and gardens.

Back to BOLO list of months.

Turfgrasses

Fairy ring (all turfgrasses)

Large patch (bermudagrass/zoysiagrass/centipedegrass/St. Augustinegrass)

Microdochium patch (Kentucky bluegrass/bermudagrass)

Red thread (Kentucky bluegrass/fescue/ryegrass)

Yellow patch (fescue/Kentucky bluegrass/ryegrass)

Woody Ornamentals

Multiple hosts: Phytophthora root rot, Armillaria root rot, sooty mold, mistletoe, improper planting, sapsucker injury

Azalea: Phytophthora root rot, Armillaria root rot, Phomopsis dieback

Black cherry: black knot

Black gum: felt fungus (Septobasidium)

Boxwood: Phytophthora root rot, boxwood blight

Cherry-laurel: shot-hole

English Ivy: anthracnose, bacterial leaf spot

Hollies: felt fungus (Septobasidium)

Indian hawthorn: Entomosporium leaf spot

Japanese black pine: pine wilt nematode

Japanese holly: black root rot, Armillaria root rot

Junipers: Phytophthora root rot (except Eastern red cedar), Armillaria root rot

Leyland cypress: Cypress (Seiridium) canker, Botryosphaeria canker/dieback

Ligustrum (privet): Cercospora (Pseudocercospora) leaf spot

Magnolia, Southern: algal leaf spot

Oak: felt fungus (Septobasidium), mistletoe

Rose: Armillaria root rot

Spruce: Rhizosphaera needle cast

Herbaceous Ornamentals (Perennials, Bedding Plants)

Liriope: anthracnose on leaf tips, Fusarium crown rot

Pansy/viola: Phytophthora root and crown rot, black root rot, Pythium root rot, nutrient deficiency

Fruits & Nuts

Plum: black knot

Pecan: scab

Vegetables & Herbs

Cole crops: Black rot, Sclerotinia white mold

Arthropods Associated with Multiple Plants

Fall cankerworms (adults)

Bagworms (Thyridopteryx ephemeraeformis; bags often containing eggs)