Arborvitae trees that are covered with cylindrical cones are infested with which pest?

Arborvitae trees that are covered with cylindrical cones are infested with which pest?

• A. Bagworm
• B. Spider mite
• C. Aphid
• D. Scale insect

Answer: (A)

Bagworms are the pests that create those cylindrical, bag-like cases from silk and bits of foliage that hang on arborvitae branches. When an infestation is present, you’ll see a string of tan, cigar-shaped bags along the needles. The caterpillars inside feed on the foliage, often defoliating sections of the plant. The bags themselves are a clear sign of the problem and are why this pest is the best fit for the description. Other common pests don’t form these cylindrical bags: spider mites cause fine stippling and webbing, aphids cluster on new growth and produce honeydew, and scale insects appear as small, immobile shells on the twigs.

Bagworms are the pests that create those cylindrical, bag-like cases from silk and bits of foliage that hang on arborvitae branches. When an infestation is present, you’ll see a string of tan, cigar-shaped bags along the needles. The caterpillars inside feed on the foliage, often defoliating sections of the plant. The bags themselves are a clear sign of the problem and are why this pest is the best fit for the description.

Other common pests don’t form these cylindrical bags: spider mites cause fine stippling and webbing, aphids cluster on new growth and produce honeydew, and scale insects appear as small, immobile shells on the twigs.