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Answered Questions from Our Experts
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1.
I have a yellow-poplar that is losing its leaves. The leaves, both green and yellow, have black spots on their undersides. The yellow leaves are falling to the ground. It looks like fall in the middle of summer. What is wrong with my tree?
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Published: May 16, 2008
2.
For the past couple of years, I've had a problem with what I think is early blight on my tomatoes. I am thinking of trying the bags that hang the plants upside down. What is the longest that any of the types of blight stay in the soil? If I use the hangers this season, will my soil be safe next year?
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Published: May 15, 2008
3.
Is there any tie between the fungus causing Septoria leaf spot on tomatoes and the fungus causing damage on flowering crab apples?
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Published: May 15, 2008
4.
What causes brown spots or blotches on leaves of cucumbers, cantaloupes, and watermelons?
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Published: May 15, 2008
5.
I have a small patch of sweet corn with one early and one late variety. The late variety has become infected with smut. Is there a fungicide I can apply to keep it from spreading?
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Published: May 15, 2008
6.
I live in Colorado. What is wrong with a clematis that gets what looks like rust on the leaves and doesn't grow much?
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Published: May 15, 2008
7.
We live in Colorado. What is wrong with our new scarlet Hawthorn? The leaves are falling off and the remaining leaves are covered with small black dots.
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Published: May 15, 2008
8.
i live in Colorado. What's the problem with our Autumn Blaze maple tree? Its leaves have turned yellow, and about half of the leaves have black spots and are dying.
Published: May 15, 2008
9.
10.
I have garden phlox that gets yellow and mottled leaves every year. It affects it enough to reduce the blooms. Could this be lack of water or perhaps a disease or deficiency? I live in Minnesota.
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Published: April 22, 2008
11.
I have a Rosa alba (Maiden's Blush) rose, and it is a huge bush covered with light pink buds in spring. The blooms partially open, get stuck, and look deformed, while other buds turn brown. Some little brown beetles appear on the plant during warmer months. What should I do?
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Published: April 22, 2008
12.
I live in Colorado. What is the best approach to limit the damage done by snow mold? Should I spray a fungicide on affected areas to keep it from spreading?
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Published: April 22, 2008
13.
What causes swellings on the roots of tomatoes or other vegetables?
not rated
Published: April 09, 2008
14.
Why are the ends of tomato fruits turning black and rotting?
not rated
Published: April 09, 2008
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