Posts Tagged ‘disease’

Lantana – Allelopathy

Q: This year I tried to grow some gladioli in a spot where I had lantana last year. The results were tortured looking. After researching on the Web I find that lantana is allelopathic but I could not find how...

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Tree Hole – Filling

Q: I just purchased a home with two very old Japanese maple trees in my front yard. I noticed that one of them has a hole in the base of the trunk large enough for a small adult fist to...

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Hydrangea – Leaf Spot

Q: I planted two hydrangeas a year ago. The leave are now covered in round brown spots and they are not blooming. What should I do? A: Hydrangeas commonly get a leaf disease called Cercospora leaf spot. It usually infects...

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Tree – Determining Age

Q: I am trying to find out the age of several live oak trees at my father-in-law’s house in north Florida. Is there some general way to determine their age based on their diameter? A: According to Certified Arborist Brian...

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Fruit Tree – Grafting

Q: In the Sunday paper there was an ad for a “fruit salad tree” which they claim can grow five different kinds of fruit. I was considering buying one, but first I wanted to find out what you knew about...

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Photinia – Pruning

Q: When is the best time to trim my red tip photinia shrubs back? Mine was really nice until the last couple of years. I think their decline was caused by cutting them back at the wrong time. Any tips?...

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Aucuba – Wilting

Q: We live on a shady lot and have a lot of aucuba plants around our small lawn. Some of the aucuba have leaves that are turning black and wilting. Does this mean they are dying? A: If it makes...

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Health Effects of Using Manure on a Garden

Q: This summer I added quite a bit of composted horse manure (from a local stable) to the soil of my vegetable garden. With the concerns about E. coli in the soil, do you think that it is safe to...

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Dracena – Disease

Q: Our corn plant has oval shaped yellow spots with dark centers on it’s leaves. What is wrong with it and how do we remedy the problem? A: I’ve had my corn plant for about 12 years and I’ve never...

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Japanese Beetle – Control with Milky Spore Disease

Q: I recently read an article about using a product called “Doom” to control Japanese beetles. How does this stuff work? Is it effective? A: “Doom” contains a bacteria that infects Japanese beetle grubs with a disease that turns their...

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Camellia – Leaf Gall

Q: I just went out to look at my camellia and noticed that it has several leaves that are thick and swollen. They are light green compared to the other leaves and look like they have been scalded. My neighbor...

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Lantana – Allelopathy

Q: I listened with interest to your discussion of the possible allelopathic effects of Lantana this morning on your radio show. My experience has been just the opposite. I have 3 plants of ‘Mrs.Huff’, and you know how large Mrs....

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Photinia – Leaf Spot

Q: I have a row of red tips between me and my neighbor. I notice that the bushes at one end are losing leaves. The leaves also have dark circular spots on them. I do not know how to save...

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Bats – Attracting

Q: I received a bat house for Christmas (yes, I asked for one). Can you tell me some tips to make it successful or direct me to some information on making my bat house attractive to bats? I live in...

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Cedar Apple Rust

Q: I have two seven-foot tall Eastern red cedar trees. Both have growths that look like walnut meats on them. Is this cedar apple rust? A: Orange, jelly-like spore “gobs” were on the trees last spring but you didn’t notice...

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Clematis – Wilt

Q: I have a two-year old evergreen clematis that is climbing up over my garage. In the last couple of months it has started to turn brown at the ends of the vine and now all the leaves throughout are...

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Wooly Pine Scale – Identification

Q: What is this stuff that looks like snow on my pine tree in Decatur in mid-summer? Should I do something about it? It looks fluffy and is sticky. When you pull some off it can be rolled up in...

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Oakleaf Hydrangea – Root Rot

Q: I planted ‘Snowflake’ oakleaf hydrangeas last December. They have done great this year. But about a week ago, I noticed that the leaves on two of the shrubs were wilting. I checked around the base and there was adequate...

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