Tag Archives: spruce sawfly

Early Spruce Sawfly Damage Can Look Like Needle Burn

Take a quick scan of the new growth on spruce, especially Colorado spruce (Picea pungens).  Look for straw-like needles that are withering….and the disappearance of needles all together.  This is very typical damage of Yellow Headed Spruce Sawfly (Pikonema alaskensis).

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Spruce Sawfly is Doing It’s Thing

Take a quick scan of the new growth on spruce, especially Colorado spruce (Picea pungens).  Look for straw-like needles that are withering….and the disappearance of needles all together.  This is very typical damage of Yellow Headed Spruce Sawfly (Pikonema alaskensis).

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June 12/14: Yellow headed spruce sawfly is OUT

Look for tiny larvae of  Yellow-headed spruce sawfly feeding on tender new needles of spruce (e.g. Colorado spruce) in the landscape.  Plant phenology indicator:  Robinia pseudoacacia (black locust) in full bloom.  Larvae are green with lighter longitudinal stripes, yellow-brown heads.  … Continue reading

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