In the garden
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High
Late blight
Greasy gray-green blotches on leaves that brown fast, white fuzz underneath in humidity, dark firm rot on fruit...
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Low
Tomato hornworm
Big green caterpillars stripping leaves and leaving dark droppings; chewed stems near the top of the plant.
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Medium
Cabbage worms
Ragged holes in leaves, velvety green caterpillars, and small dark droppings in the crown. White moths fluttering over...
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Low
Flea beetles
Tiny black beetles that jump when disturbed; leaves peppered with small round "shotgun" holes, worst on seedlings.
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Medium
Squash vine borer
A healthy vine wilts suddenly; sawdust-like frass at the base and a mushy hole in the stem.
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Medium
Cucumber beetles
Yellow beetles with stripes or spots chewing leaves and flowers. They also spread bacterial wilt that collapses vines.
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Medium
Powdery mildew
White powdery patches on leaves that spread until foliage yellows and dies back early.
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Medium
Colorado potato beetle
Rounded yellow-and-black striped beetles and fat orange grubs stripping leaves; clusters of orange eggs under leaves.
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Low
Aphids
Clusters of tiny soft insects on new growth and leaf undersides; sticky honeydew, curling leaves, and ants farming...
Open guideOrchard & fruit
Medium
Apple scab
Olive-green to black velvety spots on leaves and fruit; bad cases drop leaves and crack the fruit skin.
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Medium
Codling moth
The classic "worm in the apple" - a tunnel to the core with frass at the entry hole.
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High
Fire blight
Shoots that look scorched and bend into a "shepherds crook"; blackened blossoms and oozing cankers on branches.
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Medium
Peach leaf curl
New leaves pucker, thicken, and turn red and distorted in spring, then drop - weakening the tree and...
Open guideLivestock & poultry
Medium
Mites & lice
Birds picking at themselves, pale combs, dirty vent feathers, and tiny crawling specks (red or tan) at night...
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High
Coccidiosis
Chicks hunched and fluffed, not eating, with bloody or foamy droppings. Spreads fast in a warm wet brooder.
Open guideBarber pole worm
Pale lower eyelids and gums, bottle jaw (swelling under the jaw), weight loss, and weakness despite good feed.
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High
Fly strike
Maggots in soiled or wounded skin, often around the rear; animal lethargic and in pain. A fast emergency...
Open guidePredator pressure
Missing or killed birds, feathers scattered, digging at the run edge, or daytime hawks circling.
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