You are here:

Plant Diseases/Expert Profile

John Cawly

U.S.
On Vacation
returns 05/31/2010
Expertise

I can help with identification and possible treatment of plant diseases that affect houseplants and horticultural species, to include both biological (fungal, bacterial, viral, parasitic etc.) and environmental/cultural (watering, potting media, etc.) aspects.

Experience in the area

Practical experience with a wide variety of houseplants and greenhouse plants, including cacti, euphorbia, african violets, amaryllus, and many others.

Organizations

American Phytopathology Society
American Society of Plant Biologists
American Society for Virology

Publications

Molecular Plant Microbe Interactions
Proceedings of the National Academy of Science (in print)
Rhodora -- Journal of the New England Botanical Society
Allelopathy Journal

Education/Credentials

BS, Southern Illinois University - Biological Sciences
MS, Southern Illinois University -- Biological Sciences - Genetic Engineering Specialization
PhD, University of Missouri Columbia -- Plant Microbiology and Pathology
(Viral Diseases specialization/Biotechnology Emphasis)

Average Ratings

  • Knowledgeability 9.88
  • Clarity of Response 9.88
  • Timeliness 9.94
  • Politeness 10.0
  • Number of Questions (in Past 24 Hours) 0
  • Max Questions to be Asked (in 24 Hour Period) 1
  • Total Questions (since joining AllExperts) 279
  • Volunteer Since 2006-10-15
  • Prestige Points 2580

Recent Reviews from Users

Read More Comments

    K = Knowledgeability    C = Clarity of Response    T = Timeliness    P = Politeness
UserDateKCTPComments
Ellen04/29/0810101010thank you very much!
Julia04/28/0810106 10 
Amir04/24/0810101010 
Diane04/17/0810101010 
Trevor04/02/0810101010Excellent advice and spot on as top .....

Recent Answers from John Cawly

2008-04-28 Black eyed susans ( RUDEBEKIA):

Hi Debra, The most common pests/diseases that affect Rubeckia species are: aphids, which suck sap from the plants and coat the leaves with sticky honeydew; goldenglow sawfly, the larvae of which may

2008-04-25 aphis:

Hi Amir, There are many methods that can be used to control aphid populations. Some are as simple as spraying with a powerful water hose. Many people encourage beneficial insects such as ladybird

2008-04-24 Shrub Disease:

Once thought to be aphids, adelgids are fluid-feeding insects that feed on coniferous species. The egg sacs of these insects look like the tips of cotton swabs clinging to the undersides of the branches

2008-04-23 whould you please help me ?:

Hi Amir, Thank you for the photos. The plants you have are azaleas, and they appear to be healthy to me. The leaves may have a small amount of powdery milder, but that is not a problem. These plants

2008-04-21 plant disease:

Hi Gennie, Have you had an unusually wet spring? These conditions provide ideal conditions for fungal spore germinations. The aloe plants also can have ring spots or black spots that are related to

 

Ask A Question

All Answers

Answers by Expert:

Ask Experts

Volunteer

©2009 About.com, a part of The New York Times Company. All rights reserved.