Ask the master gardener for a fall moth

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Pennsylvania State University, Berks County Master Gardener, offers questions and answers to questions received through the Garden Hotline.

Question: What is a white flowering shrub by the side of the road? Can I grow it in the garden?

Answer: These plants are Japanese knotweed. They are very invasive and any part of the plant roots very easily in moist soil. Persicaria serrata poorly controls erosion and can degrade aquatic habitat and water quality. In addition, native plants flock. It is not a vegetable garden plant. Details: https: //extension.psu.edu/japanese-knotweed

Question: What does the canvas find at the edge of a tree branch? Are they harmful? How do you manage them?

Answer: You are looking at the fall moth. Not to be confused with tent larvae that nest in the crotch of trees in spring. The fall moth is a larval stage that skeletons and consumes the leaves inside the protective web.

The web grows as the caterpillars grow larger and need additional food. This activity takes place towards the end of the growing season and does not require any chemical treatment. If you can reach the spider web, you can pierce the spider web and the birds will be able to eat the bugs. Details: https: //extension.psu.edu/fall-webworm

The Master Gardener at Penn State University has an advanced diagnostic training staff on the hotline for lawn care, landscaping plants, houseplants, fruits, vegetables, grasses , insect and disease problems, and the identification of unknown plants and insects. I will answer the question. The advice is based on an integrated pest management strategy and an environmentally friendly approach. For more information on these and other gardening related topics, email the garden helpline ([email protected]), call 610-378-1327 and speak to the master gardener or at 1238 County. Make a reservation for Wednesday Zoom to drop in at the office. Welfare Road, Leesport, Pennsylvania. 19533. The building needs a mask.

Ask the master gardener for a fall moth

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