Managing Insect, Diseases, and Animal Pests

Is the hosta disease, HVX, a problem in Maine?

Question: Is the hosta disease, HVX, a problem in Maine? Answer: Jonathan Foster, Special Project Assistant  As you may know, Hosta Virus X is a contagious pathogen among hostas that causes disfiguring/unsightly leaf mottling, texturing, and, in extreme cases, tissue death. Not all cultivars are equally susceptible, and symptoms can be subtle in some hostas, […]

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Why are the leaves turning yellow on my clematis vine?

Question: What is happening to my clematis vine? It has yellowing leaves.  This is the second year in a row with the same problem. Answer: Jonathan Foster, Special Project Assistant  There are several potential causes for yellowing in clematis foliage. The only pathological cause we would typically worry about is tomato ringspot virus, but it […]

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How can you get rid of apple worms?

Question: We have a Liberty apple tree. We planted this variety because it was supposed to be pest resistant. Each year we have the worst case of apple worms I have ever seen.  I believe these worms are from the coddling moth. We use only organic methods in our yard. Can you give us some […]

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Is there a way to keep deer out of the garden space in my yard?

Question: I am having trouble with deer invading the small garden in my yard. I am growing in pots on my deck, but all I have planted in the yard are garlic and onions! Are there any edibles that I can plant which deer don’t like? Answer: Jonathan Foster, Special Project Assistant I recommend checking […]

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How can you manage ants without harming the vegetable garden?

Question: I have significant ant presence in my home and have a very large vegetable and native edible garden. I’m looking for advice on managing the ants without harming the gardens, where they might be living. Is there any pest management tools that would address the ants and not harm us or edible food? Answer: […]

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How can I remove spider mites from my hemlock bush without toxic sprays?

Question: How can I remove spider mites from my hemlock bush without toxic sprays? Answer: Kate Garland, Horticulturist Thank you for sending the photos so I can be sure of the plant you’re dealing with. Pesticide products used on the wrong plant can potentially cause serious damage. Here are two main options to consider from […]

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What are the spiky round growths on my beach roses?

Question: I have attached a photo of my beach roses taken last fall.  Several of the branches have spiky round growths on them.  These branches seem to be dying.   Are you familiar with this problem and to you have any suggested remedies?   Answer: Lynne M. Holland, Horticulture and Social Media Professional Your beach roses have Mossy […]

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How do you manage rust on hollyhocks?

Question: Every year my great hollyhocks are practically destroyed by RUST. They enjoy full sun and super air circulation.  I trim, sanitize my tools constantly and use fungicides to no avail. Wondering if you have any advice? I am thinking of digging and destroying them as it’s way too time consuming at this point. Answer: […]

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Would you provide advice on controlling grasshoppers and Japanese beetles?

Question: I have experienced an invasion of grasshoppers that have devastated my flower gardens for the last two years. I’ve read NOLO bait is a good product to kill grasshopper eggs but this will not be available to purchase. Can you offer a recommendation? I would also like advice to deal with Japanese beetles. Answer: […]

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