Posts Tagged ‘disease’
Azalea and Camellia – Leaf Gall
Q: The leaves on the ends of some of my camellia branches are swollen and thicker than the rest of the leaves. They are also lighter green. I’ve seen this on azaleas but not on camellias. Is it the same...
UGA Plant Disease Publications
Following are useful plant disease publications from UGA: Azalea Diseases Camellia Diseases Cane Blight of Blackberry Centipedegrass Decline Christmas Tree Diseases Common Landscape Diseases in Georgia Common Tomato Diseases in Georgia Diagnostic Guide to Common Home Orchard Diseases Disease Control...
Aspirin – To Combat Plant Disease
Q: You say on your website that aspirin can prevent disease on tomato plants. Where can I find more information about the process? A: Scientists have known for several years that certain compounds can signal a plant to defend itself...
Tomato – Late Blight Identification
Q: My Rutgers tomatoes are showing brown spots starting at the stem end, rapidly coalescing and moving downward towards the blossom end of the tomato. They are all green tomatoes which are not starting to ripen yet. Is this late...
Tulip – Diseased
Q: Back in the spring I observed these tulips growing in a bed not far from my house in Atlanta. The petal damage was so severe I took several pictures. Do you recognize this problem? Could it be damage from...
Compost Tea – Does It Work
Linda Chalker-Scott is a scientist at Washington State University who researches common garden claims and comments on their usefulness. Her thoughts on compost tea are printed below: WSU Master Gardeners are often asked about compost tea (and other products) but...
Leyland Cypress/Cryptomeria/Arborvitae – Diagnosing Diseases
Q: I have a long twenty-five foot tall Leyland cypress hedge. They were originally planted on four foot centers along my property line. They were very healthy until this summer, when die-off of needles began at one end of hedge....
St- Augustine – Take All (Take-All, take all) Disease
I am very pleased with my St. Augustine lawn. Despite dire predictions, it has not yet frozen in winter but it has spread handily in moderate shade. But a problem that was discovered in 1991 by folks in Florida and Texas...
UGA Plant Disease Publications
The following publications about diseases of plants are available online from the University of Georgia. Blossom-End Rot of Pepper and Tomato Common Landscape Diseases in Georgia Diseases of the Home Orchard Diseases of Leyland Cypress in...
Disease Control – Fungicides
A friend of mine recently told me about his drugstore bill. “It takes more than $100.00 per month to control my high blood pressure and cholesterol!” he complained. “I guess those hamburgers we enjoyed in college weren’t so good for...
Fire Blight – Control
Apples, crabapples and pears are susceptible in spring to a bacterial disease known as fire blight (fireblight). The most noticeable symptom is the sudden death of the new leaves at the end of a branch. The dead sprouts may be...
How To be Sherlock Holmes in the Landscape
I receive more than 5000 emails a year asking my advice on solving landscape problems. I can’t keep all that information in my head so I depend on several websites to give me the first clues to identify the problem...
Tomato Viruses – Identification Resources
Virus Diseases of Tomato Cornell: Important New York Vegetable Diseases Photo Gallery of Tomato Diseases Kansas State: Virus Diseases of Tomato Texas AMU: Photo Gallery of Tomato Diseases Tomato Mosaic Virus Cucumber Mosaic...
Tomato Disease Guide
Tomatoes are favorite summer vegetable but they are susceptible to several diseases and conditions. Following are excellent guides to diagnosing tomato diseases. UGA Tomato Problems Guide Auburn Tomato Disease Guide Texas – Diagnosing Tomato Problems Maine Tomato Problem Guide Wilt,...
Ecinacea – No Remedy for Colds
Study: Echinacea no cold remedy Alicia Chang – Associated Press Thursday, July 28, 2005 Being sick with a cold is nothing to sneeze at, but new research finds that taking the popular herbal remedy echinacea does nothing to treat or...
Pine Needle Cast Disease
When pine needles turn reddish-brown in early summer, several things could be the cause. It could be beetles in the trunk, compaction damage to the roots or, occasionally, a needle disease. In the year after a wet summer, the disease...
Leyland Cypress – Seridium vs Botrysphaeria
Two diseases commonly cause brown branches on Leyland cypress: seridium canker and botryosphaeria canker. Notes from Dr. Jean L. Williams-Woodward Extension Plant Pathologist – Ornamentals The best way to tell the difference, aside from examining the branches and looking for...
Dogwood – Diseases
Nothing can panic a homeowner like the threat of disease to their prized dogwoods. Dogwood trees in Atlanta have had several problems this spring. Brown, distorted leaves and severe leaf drop are common complaints. Fortunately, the problems are probably not...
