BOLO October
go.ncsu.edu/readext?738912
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)
Leaf spot caused by Bipolaris/Drechslera (bluegrasses/bermudagrass)
Red thread (Kentucky bluegrass/fescue/ryegrass)
Rust (Kentucky bluegrass/fescue/St. Augustinegrass/zoysiagrass)
Yellow patch (fescue/Kentucky bluegrass/ryegrass)
Woody Ornamentals
Multiple hosts: Phytophthora root rot, Armillaria root rot (sometimes producing mushrooms this time of year), Botryosphaeria dieback, conks of wood decay fungi such as Pseudoinonotus dryadeus, a.k.a. the weeping polypore, sooty mold, improper planting
Multiple shrub species: root-knot nematodes
Arborvitae: Phytophthora root rot, Armillaria root rot
Azalea: Phytophthora root rot, Armillaria root rot, Phomopsis dieback, stunt nematode
Boxwood: Phytophthora root rot, boxwood blight, boxwood stem canker (Colletotrichum theobromicola), nematodes (lesion, root-knot, spiral)
Cherry-laurel: shot-hole, Botryosphaeria canker/dieback
English Ivy: anthracnose, bacterial leaf spot, Phytophthora root rot
Hemlock: Rosellinia needle blight
Hydrangea: Cercospora leaf spot
Indian hawthorn: Entomosporium leaf spot
Japanese black pine: pine wilt nematode
Japanese holly: black root rot, Armillaria root rot, Botryosphaeria canker/dieback
Junipers: Phytophthora root rot (except Eastern red cedar), Armillaria root rot
Leyland cypress: Phytophthora root rot, Armillaria root rot, Cypress (Seiridium) canker, Botryosphaeria canker/dieback, Passalora needle blight, algae on foliage, internal browning
Ligustrum (privet): Cercospora (Pseudocercospora) leaf spot
Loropetalum: bacterial gall (knot)
Magnolia, saucer: powdery mildew
Magnolia, Southern: algal leaf spot
Maple: anthracnose
Oaks: bacterial leaf scorch, Tubakia leaf spot, secondary leaf spots, Biscogniauxia canker, weeping polypore (Pseudoinonotus dryadeus)
Redbud: Cercospora (Passalora) leaf spot
Red-tip photinia: Entomosporium leaf spot
Rose: Armillaria root rot, crown gall, black spot, rose rosette
Spruce: Rhizosphaera needle cast
Sycamore: bacterial leaf scorch
Herbaceous Ornamentals (perennials, bedding plants)
Multiple hosts: root-knot nematode, late season decline from low nutrition and foliar diseases
Impatiens: downy mildew
Ironweed: powdery mildew, rust
Liriope: anthracnose on leaf tips, Fusarium crown rot, root-knot nematode
Pansy/viola: Phytophthora root and crown rot, black root rot, Pythium root rot
Peony: leaf blotch (measles)
Sedum: powdery mildew
Zinnia: powdery mildew, Alternaria leaf spot (also on petals)
Fruits & Nuts
Fig: rust
Pecan: scab
Vegetables & Herbs
Beans: Cercospora leaf spot
Basil: downy mildew
Cole crops: black rot, white leaf spot of turnip and Swiss chard
Arthropods of the general landscape
Wheel bugs (adults)
Arthropods associated with multiple plants
Bagworms (Thyridopteryx ephemeraeformis; bags often containing eggs)