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Posts Tagged: aphids

The Enemy of the Gardener

Oleander aphids clustering on a milkweed stem. (Photo by Kathy Keatley Garvey)

Aphids, don't you just hate them? Especially those oleander aphids that suck the very lifeblood out of our milkweed plants that we're struggling to save for monarch butterflies. Just call aphids "The Enemy of the Gardener" or "The Enemy of the...

Oleander aphids clustering on a milkweed stem. (Photo by Kathy Keatley Garvey)
Oleander aphids clustering on a milkweed stem. (Photo by Kathy Keatley Garvey)

Oleander aphids clustering on a milkweed stem. (Photo by Kathy Keatley Garvey)

Aphids magnified on a Leica DVM6 microscope, operated by Lynn Epstein, UC Davis emeritus professor of plant pathology.
Aphids magnified on a Leica DVM6 microscope, operated by Lynn Epstein, UC Davis emeritus professor of plant pathology.

Aphids magnified on a Leica DVM6 microscope, operated by Lynn Epstein, UC Davis emeritus professor of plant pathology.

Posted on Friday, September 28, 2018 at 4:00 PM

Sticky mess on plants

Feeding by aphids created this sticky honeydew on crape myrtle leaves. (Credit: Belinda Messenger-Sikes)

Are you seeing cars, sidewalks, driveways, or other plants covered in sticky stuff, especially those under trees? This sticky substance, called honeydew, is produced by certain insects that excrete it when they feed on plants. Plant leaves look shiny and...

Posted on Monday, September 24, 2018 at 3:06 PM
Tags: ants (30), aphids (43), Asian citrus (1), car (1), dripping (1), honeydew (8), huanglongbing (33), leafhoppers (4), mealybugs (3), psyllids (2), scale (2), sooty mold (4), sticky (2), UC IPM (214), whiteflies (4)
Focus Area Tags: Pest Management Yard & Garden

The Incredible Aphid-Eating Machines

Lady beetle larva dining on aphids on milkweed, UC Davis campus. (Photo by Kathy Keatley Garvey)

Just call them the "incredible aphid-eating machines." That would be the lady beetles, commonly known as ladybugs (although they are not bugs; they're beetles belonging to the family Coccinellidae, and they're not all "ladies"--some are male!). How...

Lady beetle larva dining on aphids on milkweed, UC Davis campus. (Photo by Kathy Keatley Garvey)
Lady beetle larva dining on aphids on milkweed, UC Davis campus. (Photo by Kathy Keatley Garvey)

Lady beetle larva dining on aphids on milkweed, UC Davis campus. (Photo by Kathy Keatley Garvey)

A lady beetle, aka ladybug, tracks down more prey. (Photo by Kathy Keatley Garvey)
A lady beetle, aka ladybug, tracks down more prey. (Photo by Kathy Keatley Garvey)

A lady beetle, aka ladybug, tracks down more prey. (Photo by Kathy Keatley Garvey)

Posted on Thursday, August 30, 2018 at 5:38 PM

Curling Leaves on Plants

Plant problem diagnostic tool menu.

If you are puzzled by curling leaves on plants in your garden or landscape, you may need to do some detective work to figure out the cause. Curling leaves can be caused by many problems, including insect damage, disease, abiotic disorders, or even...

Plant problem diagnostic tool menu.
Plant problem diagnostic tool menu.

Plant problem diagnostic tool menu.

Posted on Monday, May 21, 2018 at 1:16 PM
Tags: abiotic (4), aphids (43), damage (12), herbicide (5), leaf curling (1), peach leaf curl (5), thrips (8), UC IPM (214), whiteflies (4)
Focus Area Tags: Pest Management Yard & Garden

Top 20 Pest Notes of 2017

Larva and adult furniture carpet beetles. [Credit: D-H Choe]

Pests have popularity contests too. We recently looked at how many visits our popular Pest Notes publication series received in 2017. If you aren't familiar, the UC IPM Pest Notes series are science-based publications written and reviewed by experts on...

Posted on Tuesday, February 27, 2018 at 4:31 PM
Tags: aphids (43), bark (3), bed bugs (24), carpet beetles (2), clothes moths (4), fire blight (2), fungus gnats (1), gophers (4), hives (1), honey bee swarms (1), leaffooted (4), management (23), peach leaf curl (5), Pest Notes (56), rats (8), scale (2), soil solarization (1), spider mites (2), squirrels (1), thrips (8), UC IPM (214), widow spiders (1)
Focus Area Tags: Pest Management Yard & Garden

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