what is eating the leaves on my rhododendron?
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Vine weevils and rhododendron These nocturnal black flightless insects are more damaging at the larval stage as white grubs in the ground (see above). The adults cause cosmetic damage by notching the leaves of rhododendrons.
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Rhododendron (Rhododendron spp.) Both the leaves and flowers of this plant are toxic to pigs; the roots are non-toxic.
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2) If you've noticed leaves that look like they've been chewed on or caterpillar-like insects on your river birch; these are most likely larvae of the Dusky Birch Sawfly. These 1 inch long, yellow-green bodied, black headed larvae, feed in groups along the leaf margins, eating their way to the center vein.
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Vine weevils and rhododendron These nocturnal black flightless insects are more damaging at the larval stage as white grubs in the ground (see above). The adults cause cosmetic damage by notching the leaves of rhododendrons. This is usually where there are overhanging conifer or other branches.
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Rhododendron from the heath family (Ericaceae) is poisonous to bees and humans. It contains an andromedotoxin. Mountain Laurel (Kalmia latifolia) also contains an andromedotoxin which can poison humans. California buckeye (Aesculus californica) – has caused losses of honey bee colonies throughout its range.
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Large rose sawflies have pale spotted black, green and yellow larvae that eat the leaves of roses, sometimes causing severe defoliation. ... Roses can also be attacked by other sawflies such as the rose leaf-rolling sawfly and rose slug sawfly or slugworm.
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When your grapevine leaves have notched holes along the edges, it may be due to feeding by the black vine weevil. This 1/2-inch-long black beetle marked with white scales on its wings and a distinctive snout eats leaves and destroys new buds and shoots when bud-break and adult weevil emergence coincide.
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Just Bad Bugs Those holes around the edges of leaves might be caused by cutting insects -- slugs, Fuller rose beetles, leafrollers and Amobia caterpillars. Slugs and rose beetles are ground dwellers that eat holes in leaves. Leafrollers weaken leaves so they roll up.
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Leafminers, caterpillars and cutworms are the most common leaf-eating insects that feast on gerbera daisies. ... Caterpillars and cutworms feeding on the gerbera daisy will cause ragged leaves, which may distort, die and fall from the plant.
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 The adults cause cosmetic damage by notching the leaves of rhododendrons. This is usually where there are overhanging conifer or other branches. Cutting these back often solves the problem. Or move the plant into a more open site.
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Rhododendrons, yew, and wisteria are among a few plants harmful to ducks. Anything of the nightshade family is suspect, although in some cases it is just the leaves. Cherry tomato fruits are often used as treats and pill pockets for ducks, but they should not eat the leaves.
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There are over 250 species of rhododendron; other common names include rosebay and azalea. The plant is highly toxic to dogs, and ingesting just a few leaves can result in severe allergic reactions.
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The hollyhock weevil eats small irregular holes in the leaves while Japanese beetles can riddle the leaves with holes eventually skeletonizing them. Knock these pests into a bucket of soapy water to reduce their population and feeding damage. Caterpillars and sawflies can also eat irregular shaped holes in the leaves.
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Sundews are “flypaper” plants that trap prey in sticky hairs on their leaves. They make up one of the largest groups of carnivorous plants. Long tentacles protrude from their leaves, each with a sticky gland at the tip. These droplets look like dew glistening in the sun, thus their name.
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Rutabaga Pests Foliage munching caterpillars. Seedling destructive cutworms. Root knot nematode infested soil causes deformed root formation. Turnip aphids and flea beetles ravage the greens and a chemical spray may be needed to banish these pests.
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Wisteria Pests A variety of pests nibble at wisteria leaves, but only the wisteria borer has been observed giving established plants any real problems. These tiny beetles cut perfectly round holes into the woody parts of the vine, where they may spend a significant portion of their lives.
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Azaleas (Rhododendron spp) are evergreens and can be large shrubs or small trees. The flowers, which bloom in spring, come in many variations of pink, purple and orange-red, as well as white. The leaves and nectar are toxic to horses.