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Plant Diseases/Experts

ExpertAverage RatingsExpertise

Jim Hyland

U.S.
Available
  • Knowledgeability 9.87
  • Clarity of Response 9.85
  • Politeness 9.96
  • Response Time(hr) 18.8
  •  --Last 90 Days(hr) 6.8
  • Total Questions 2518
 30 years experiance in the ID and management of forest diseases and ID of landscape tree diseases.

Melissa Johnston

U.S.
Available
  • Knowledgeability 9.92
  • Clarity of Response 9.96
  • Politeness 10.00
  • Response Time(hr) 66.7
  •  --Last 90 Days(hr) 91.2
  • Total Questions 302
 Plant diseases, landscaping, tropical plants, roses, herbs, plant care, grafting, horticulture, plant identification, anything about plants I can likely answer.

Dr Stephen Vann

U.S.
Available
  • Knowledgeability 9.90
  • Clarity of Response 9.91
  • Politeness 9.98
  • Response Time(hr) 15.3
  •  --Last 90 Days(hr) 6.7
  • Total Questions 1429
 Plant Diseases and Disorders of Lawn Grasses, Trees, Vegetables,and Ornamentals

kathy crowley

U.S.
Available
  • Rating N/A
  • (Expert Not Accept Rating)   
  • Response Time(hr) 10.7
  •  --Last 90 Days(hr) 11.5
  • Total Questions 1596
 Tropical plants in Florida, Bamboo, Vines, Fruit trees, Antique Roses, rare plants from around the world.

Jennifer Olson

U.S.
On Vacation
returns 03/01/2012
  • Knowledgeability 9.95
  • Clarity of Response 9.93
  • Politeness 9.98
  • Response Time(hr) 45.0
  •  --Last 90 Days(hr) 27.8
  • Total Questions 133
 Plant diseases affecting vegetables, fruits, nuts, lawns, trees, shrubs and ornamental plants. I have just volunteered as an expert on this site as of 01/2011.

John Cawly

U.S.
Maxed Out
  • Knowledgeability 9.89
  • Clarity of Response 9.89
  • Politeness 10.00
  • Response Time(hr) 24.7
  •  --Last 90 Days(hr) 37.9
  • Total Questions 290
 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.

Recent Answers

2012-02-09 Pachira Aquatica trouble ?:

Dear Armaz,    Thank you for the additional information.    Your advice was exactly correct.  In low light conditions, nutrients are not needed.  Also, too much water can promote root diseases.  I would

2012-02-06 Pachira Aquatica trouble ?:

These plants are usually pretty durable and disease free.  This species is native to tropical swamps, so the use of fertilizers should be done sparingly.  With this having been said, the chlorosis (yellowing)

2012-02-05 schefflera:

Charles:  Without looking at these spots under some sort of magnification, I would be guessing. They could be fungus or even an insect.  These are not characteristic for anything specficic.  If there are

2012-02-04 Dying Gardinia Bushes:

Donald,    There are many reasons why the gardenia plants have yellow leaves.  It may simply be the result of the change of seasons.  Gardenia plants will show leaf yellowing and drop in the spring and

2012-02-02 apple:

Hello Vivek,    I am sorry to say that once a pathogen infects the root systems, there is little you can do to save the apple trees.  Soil fumigation is a very expensive process, and the results are variable

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