Minor Pests
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Collapse ▲Minor pests can be a major problem in certain fields. Often there are few control options, but proper identification and help determine if the problem will get worse.
Online Information
CTN 23: Minor Pests of Fraser Fir Christmas Trees – includes information on both insects (white pine cone beetles, terminal attackers, bagworms, gypsy moth, seed and cone insects, scales) and diseases (Botrytis shoot blight, sooty mold, fern/fir rust, Rhizosphaera needle cast, Annosum butt and root rot, Rosellinia blight, Nectria canker)
Photo Gallery
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- Shoots killed by Botrytis have a lesion at the base where they join the branch
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- Rosellinia blight showing fungal mat and spore structures.
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- Rosellinia blight causes premature needle loss
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- Black fungal spores erupting from underside of needle infected with Rhizosphaera needlecast
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- White spores of fir/fern rust erupting from the underside of infected needles.
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- Algae appears on the top of older need.es of Fraser fir.
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- Nectria canker
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- Annosus root rot
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- Weevil feeding on Fraser fir shoot
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- Japanese beetles are one of a number of pests that may feed on the bark of shoots.
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- Multiple bagworms on Fraser fir with needle loss
Other On-Line Resources:
Pacific Northwest Pest Management Handbooks: Fir, True (Abies spp.) – Rusts – Includes control recommendations