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  4. Timely Topics - Disease

Timely Topics - Disease

Results

wilted seedlings

Addressing Issues with Starting Seeds Indoors

concolor fir

Alternatives to Colorado Blue Spruce

Image of anthracnose on a sycamore leaf

Anthracnose on shade trees

Images of leaves from an apple tree with a case of apple scab

Apple Scab

An ash tree canopy with ash decline.

Ash Decline

Shot hole symptoms caused by a bacterial pathogen in apricot leaves

Bacterial Spot on Stonefruit Trees

leaf with spots

Biotic vs. Abiotic - Distinguishing Disease Problems

A stonefruit tree with a case of black knot, showing long black galls on its branch.

Black Knot

Blossom end rot on tomato, with a brown leathery patch on the bottom of the fruit.

Blossom End Rot

Leaf symptoms of necrosis (death) of the tissue along the veins.

Bur Oak Blight

Gymnosporangium juniperi-virginianae gall on cedar,Orange tendrils protrude from cedar foliage

Cedar-Apple Rust

Image of hawthorn rust on the top of a leaf

Cedar-Hawthorn Rust

phytotoxic reaction on cabbage by Tomasz AdobeStock

Chemical Injury to Garden Plants

Image of a Euonymus with a case of crown gall

Crown Gall

symptoms (top) signs (bottom) of Cucurbit anthracnose

Cucurbit Anthracnose

Geranium leaves showing wilting and V-shaped lesions from infection by Xanthomonas campestris pv. pelargonii, cause of bacterial blight.

Cucurbit Bacterial Wilt

Image of a spruce tree with Cytospora canker

Cytospora Canker

Damping off in snapdragons Ron Jones, North Carolina State University, Bugwood.org

Damping Off

Image of black dots caused by the Sphaeropsis on a pine cone

Diplodia Tip Blight and Canker

Image of Dothistroma on the needles of an Austrian Pine

Dothistroma Needle Blight

Image of downy leaf spot

Downy Leaf Spot

Image of an elm tree with Dutch Elm Disease

Dutch Elm Disease

Image of dead grass rings resulting from fairy ring mushrooms

Fairy Rings

Image of fire blight

Fire Blight

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