Managing Insect, Diseases, and Animal Pests

Why are my Phlox plants dying and what can be done to save them?

Question: I have four creeping Phlox plants that were planted in the spring of 2023 and grew well. They looked good this spring until about 7-10 days ago when all four almost died overnight. The middle of the plants appear dead. There is some very little life at the very edges. These plants are in […]

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What could be causing my Viburnum to have yellow spots and curled leaves?

Question: I’m seeing yellow spots on my Lil’ Ditty Witherod Viburnum and the leaves are starting to curl. I cannot see any insects though a nearby different variety Viburnum has visible aphid activity & curling leaves. Answer: Jonathan Foster, Home Horticulture Outreach Professional I’m sorry to hear about the viburnum issues. The visible aphid activity […]

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What are some shade-friendly flowering plants or shrubs that slugs don’t like?

Question: I am looking for suggestions on shade-friendly flowering plants or shrubs that slugs do not like. I’m open to all colors and annuals or perennials. Answer: Jonathan Foster, Home Horticulture Outreach Professional I have two resources to recommend: UMaine Cooperative Extension Fact Sheet #5036 “Slugs” (for identifying and managing the slug population in your garden) […]

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When is the best time to treat for grubs?

Question: The warmer weather earlier in the Spring the last few years has shifted the treatment for grubs in landscapes to earlier and earlier. Do you know when the best time or date in the Spring is now for this year?  Answer: Jonathan Foster, Home Horticulture Outreach Professional Let me refer you to our UMaine Cooperative […]

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Does my crabapple tree with spotted leaves and black fruit have a disease?

Question: I have a 23-year-old crabapple tree. This past summer and fall the leaves were spotted with black and brown. It only produced small shriveled black fruit. Is there a disease I should be treating for? Answer: Jonathan Foster, Home Horticulture Outreach Professional Last year was a challenge for all kinds of fruit-bearing trees in […]

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How can you treat an Alleghany Viburnam that dropped leaves?

Question: Alleghany Viburnam dropped leaves which turned brown and curled up. I don’t know if this is an insect or fungus problem or something else. How can I fix? Answer: Jonathan Foster, Home Horticulture Outreach Professional I’m not sure from the wording of your question if the leaves browned and curled before or after dropping. […]

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What created this cocoon on a beach plum?

Question: I recently discovered this growth/cocoon on a young beach plum. It is only about 5/8″ long and at first assumed it to be some kind of cocoon given the perfectly round opening, only it appears to the be the same woody material as growing on the beach plum (or perhaps very well camouflaged). Any […]

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