There are hundreds of orange and black bugs of various sizes that seem to be feeding on my milkweed plants. What should I do? When I went to research this topic, I had to laugh at the simplicity ...

Black and orange bugs on milkweed plants are usually milkweed bugs and not box elder bugs. In big enough numbers, they can do significant plant damage. Skip to Article. Set weather.

What they look like: Adult harlequin bugs have vibrant red (sometimes orange) and black markings and are about 9.5 millimeters long with “flat, shield-shaped bodies,” Ramsey says.

Q: We have a large number of these black and orange bugs on our milkweed plants. Do they hurt the swallowtail butterflies? Will they kill our milkweed? A: Oncopeltus fasciatus, or large milkweed ...

Avoid handling them, as this and other species can produce defensive cyanide-containing secretions if they feel threatened from predators.

RICHMOND, Va. (WRIC) — You might remember hearing about the spotted laternfly, the invasive orange and black bug that impacted plants all over Virginia last summer. This month, the Department of ...