Vulnerable plants will benefit from yearly maintenance treatments.

Scale

By admin

Common on backyard trees, ornamental shrubs, greenhouse plants and houseplants, over 1,000 species of scale insects exist in North America. They are such oddly shaped and immobile pests that they often resemble shell-like bumps rather than insects. Scale insects vary dramatically in appearance; from very small organisms (1–2 mm) that grow beneath wax covers (some…

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Gypsy Moths “The invasion” How are we doing?

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Although it is November, things are just starting to slow down for WSDA gypsy moth survey coordinator Tiffany Pahs and WSDA’s gypsy moth trapping program. They are only now wrapping up their 44th year of trapping for gypsy moths, part of a decades-long successful effort to keep gypsy moths from establishing in Washington. WSDA’s article…

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Whitefly

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Aphids

By admin

An aphid is a small, soft-bodied insect that survives by sucking the sap from plants and consuming it. Aphids come in all colors, although pale white or light green are the most common. They can also be black, or yellow. In fact, there are more than 4,000 different aphid species in the world today. They…

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Hemlock woolly adelgid

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Adelgids are aphid-like insects in the genus Adelges (family adelgidae) that feed mainly on conifers. Conifers are trees and shrubs that bear cones such as Pine, Spruce, Hemlock, Douglas Fir, True Fir, and many other valuable landscape and forest species. Like aphids, adelgids feed by tapping into their host plants and withdrawing plant sap. Infestations…

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Codling Moth: Did the late bird miss the worm?

By Evan Ogden

Codling moth worms in your apples. If you grow apples in your backyard, chances are you’ve seen what these little fruit miners can do to your apple crop. With up to three generations a year, it is a challenge to control them and requires a multi-pronged approach. A combination of mechanical, biological and chemical methods…

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Which caterpillar is eating your tree?

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  Here’s a great resource: How to tell the difference between the big three Tent caterpillar Gypsy moth Fall web worm Western tent caterpillar info here

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Fall web worms

By admin

Fall web worms usually appear on trees in late summer or Fall where as Tent caterpillars appear in the Spring. The fall webworm is a moth in the family Erebidae known principally for its larval stage, which creates the characteristic webbed nests on the tree limbs of a wide variety of hardwoods in the late…

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Leaf miner

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A leaf miner is the larva of an insect that lives in and eats the leaf tissue of plants. The vast majority of leaf-mining insects are moths (Lepidoptera), sawflies (Symphyta, a type of wasp) and flies (Diptera), though some beetles also exhibit this behavior. Birch, Elm, Madrona and Holly are all common targets for leaf…

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Root weevils

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Are you noticing a lot of notches on the edges of your rhododendrons? Have you looked on and under the foliage trying to see just who is dining on your prized plant, only to find nothing? More than likely, root weevils are the culprits. The adults are nocturnal feeders, and spend the day in the…

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Dormant season plant healthcare treatments

By Evan Ogden

With the leaves down and your harvested fruit all canned, pressed or fed to local wildlife, its time to consider wintertime care of your trees and plants. Pruning can be done anytime between leaf fall and the first signs of budding in late winter. Early winter is probably best, so you can enjoy the fruits…

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Lacebugs

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Lace bugs are tiny insects that grow no more than one-eighth inch long. Small, clear cells cover their wings and thorax, giving them their lacy appearance. They feed by sucking the sap from the foliage of trees and shrubs, leaving them looking mottled, stippled and discolored.

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