Posts Tagged ‘disease’

Hosta – Diseases and Pests

Hosta are one of the most common landscape plants. Yet they are affected their fair share of diseases and pests. If you have hostas, this publication from The University of Georgia and The University of Iowa will help diagnose any...

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Plants – Watering in Summer

Q: I have heard two trains of thought regarding summer watering. 1. Watering in the morning causes problems because moisture on plant leaves could burn them when they are in full sunshine. 2. Watering plants in the evening creates fungus...

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Butterfly Bush – spider mite control

Q: I have a mature butterfly bush. This year it is looking really bad. The leaves are curling up, like they are not getting enough water, but all my other butterfly bushes are doing fine. Any ideas? A: My first...

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Dogwood – Spot Anthracnose

Q: My dogwood tree has dozens of tiny purple spots on each leaf. The leaves are twisted and disfigured. Other dogwoods in the neighborhood look fine. How will this affect the tree? A: Ah, sweet mysteries of nature! Why a...

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Oak – ‘Sudden Oak Death’

Q: I read in the newspaper a few weeks ago about a “Godzilla” fungus that is attacking oak trees. My husband and I were taking a walk recently and we noticed that our neighbor has some type of black lesion...

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Vinca – Rhizoctonia fungus

Q: The vinca patch in my yard has a fungus that makes the stems turn black. The leaves are first yellow and then turn brown. It appears in patches with no specific pattern. Is there anything I can do to...

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Juniper – Phomopsis tip blight

Q: I’m in a panic because my junipers are dying. The tips of the branches turn brown. This quickly turns into a very dead branch and so on and so on. I don’t see any noticeable insects. A: Phomopsis tip...

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Tomato – Blossom End Rot

Q: My wife and I are growing tomato plants in two locations. Mine are in the garden, hers are in containers on the back deck. Tomatoes on her plants are turning black on the bottom. All ten of mine are...

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Chestnut – Disease-resistant variety

Q: I’ve read that the American chestnut is being cross-bred with the Chinese chestnut to make a blight resistant tree. I’d really like to plant one! The ones I read about are mostly American and have all the American chestnut...

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Camellia – Leafspot

Q: I have two camellias that were planted last May. They got brown spots on the leaves and now the spots are turning white. Do you know what’s wrong with them? A: This is a good example of what happens...

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Cherrylaurel – Leaf Spot

Q: We have a Carolina cherrylaurel in our backyard. It has some brownish-gold spots as well as some small holes in the leaves. It gets early morning and afternoon sun with spotty shade most of the rest of the day....

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Fescue – Resisting brown patch

Q: I am tired of my fescue lawn dying every summer. It always starts with brown spots, then progresses to just dead patches all over. I am looking for the highest-rated fescue that has the best resistance to brown patch...

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Rose – Disease from Thorns

Q: A co-worker of mine is having a terrible time because she evidently caught an infection from being stuck with thorn from a rose bush she was moving. She had a place on her leg that wouldn’t heal, then after...

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Heirloom Plants – Using

Q: I’ve been pondering your recent reply to the person who planted the one hundred year old plum variety. You mentioned that he wouldn’t wear clothes that were a century old, so why plant a plum variety that’s so ancient....

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Tomato – Planting in Same Spot

Q: I’ve always heard that you shouldn’t plant tomatoes in the same spot two years in a row. I had a great, sunny spot for tomatoes last year and they were plentiful. I’m limited in space and would like to...

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Tomato – Bacterial Wilt

Q: I need information on tomato bacterial wilt. Specifically, how to contain it, how contagious is it, what else it can affect, how I can keep from spreading it to the rest of my garden. A: Bacterial wilt is a...

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Japanese Beetle – Milky Spore Disease

Q: Japanese beetles are a big problem for us. One of the people in our subdivision is encouraging us to have a community-wide eradication program using milky spore disease powder. There are 500+ homes in our subdivision and it will...

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Blossom End Rot – Spray

Q: I have heard that calcium chloride is the fix for tomato blossom end rot. If this is true, could you please tell me the mixture I should use? A: Blossom end rot accurately describes the large tan or black...

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