Resources for Identifying Orchid Ailments

Greenhouse Growing Tips

Great greenhouse tips and useful information to
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Pest & Disease Identification Services

Dr. Talmadge Balch
Room 101
Extension Hall
Auburn University, Alabama 36849
Telephone (205) 844-6390

Wayne Vandre
State Horticulturist
2221 E. Northern Lights Blvd.
Suite 118
Anchorage, Alaska 99508
Telephone (907) 279-6575

Cooperative Extension Service
4210 N. Campbell
Tucson, Arizona 85719
Telephone (602) 628-5628

Arkansas State Plant Board
P.O. Box 391
Little Rock, Arkansas 72203
Telephone (501) 225-6598

California Department of Food & Agriculture
Diagnostic Division
1220 “N” Street
Sacramento, California
Telephone (916) 752-9325

Colorado State University
Department of Horticulture
115 Shepardson Bldg.
Fort Collins, Colorado 80523
Telephone (303) 491-6281

University of Connecticut
Department of Plant Science
1376 Storrs Rd.
Storrs, Connecticut 06269
Telephone (203) 486-3435

Robert Mulrooney, Plant Pathologist
University of Delaware
Townsend Hall
Nerwark, Delaware 19717
Telephone (302) 451-2504

University of Florida
Plant Diagnostic Lab
Building 78
Gainesville, Florida 32611
Telephone (352) 392-1994

Mail or deliver samples to local
County Cooperative Extension Service

Mr. Desmond Ogata
Agricultural Diagnostic Service Center
College of Tropical Agriculture & Human Resources
University of Hawaii at Manoa
Sherman Laboratory, Room 134
1910 East West Rd.
Honolulu, Hawaii 96822
Telephone (808) 956-6706

Mail or deliver samples to local
County Cooperative Extension Service

Plant Clinic
1401 W. St. Marys
Urbana, Illinois 61801
Telephone (217) 333-2660

Purdue University
Plant & Pest Diagnostic Lab
West Lafayette, Indiana 47907
Telephone (317) 494-8494

Iowa State University
Plant Disease Clinic
Plant Pathology Department
Ames, Iowa 50011
Telephone (515) 294-1160

Dr. Alan Stevens
Kansas State University
Horticulture Division
226 Waters Hall
Manhattan, Kansas 66506
Telephone (913) 532-6170

Mail or deliver samples to local
County Cooperative Extension Service

Dr. Clayton A. Hollier
Louisiana State University
252 Knapp Hall
Baton Rouge, Louisiana 70803
Telephone (504) 388-6195

Lois Stack
University of Maine
119 Deering Hall
Orono, Maine 04469
Telephone (207) 581-3188

Home & Garden Information Center
12005 Homewood Rd.
Ellicott City, Maryland 21042
Telephone (410) 531-5556

University of Massachusetts
Plant Science Department
French Hall
Amherst, Massachusetts 01003
Telephone (413) 545-2243

Michigan State University
Plant Diagnostic Clinic
106 Agricultural Hall
East Lansing, Michigan 48824
Telephone (517) 355-4536

University of Minnesota
Plant Disease Clinic
495 Boralong Hall
1991 Upper Buford Circle
St. Paul, Minnesota 55108
Telephone (612) 625-1915

Dr. John Byrd
Plant Pathology & Weed Science
Mississippi State University
P.O. Box 5446
Third Floor, Dorman Hall
Mississippi State, Mississippi 39762
Telephone (601) 325-3430

Julia Thompson
University of Missouri
Plant Disease I.D.
Room 45, Agriculture Building
Columbia, Missouri 65211
Telephone (314) 882-2001
Mail or deliver samples to local
County Cooperative Extension Service

Miss Diane Merrell, Clinician
University of Nebraska
Plant Disease Diagnostic Clinic
448 Plant Sciences Hall
Lincoln, Nebraska 68583
Telephone (402) 472-2559

Mail or deliver samples to local
County Cooperative Extension Service

New Hampshire
Dr. Cheryl Smith
University of New Hampshire
Plant Disease Clinic
Nesmith Hall, 131 Main St.
Durham, New Hampshire 03824
Telephone (603) 862-3841

New Jersey
RCE of Middlesex County
390 George St., 8th Floor
New Brunswick, New Jersey 08901
Telephone (908) 745-3442 or 745-3443

New Mexico
Dr. Natalie Goldberg
New Mexico State University
Box 3AE
Las Cruces, New Mexico 88003
Telephone (505) 646-3015

New York
Cornell University
Diagnostic Lab
Plant Pathology Department
317 Plant Sciences Bldg.
Ithaca, New York 14853
Telephone (607) 255-3245

North Carolina
North Carolina State University
Plant Disease & Insect Clinic
Plant Pathology Department
Box 7616
Raleigh, North Carolina 27695
Telephone (919) 515-2711

North Dakota
North Dakota State University
Plant Pest Diagnostic Lab
Plant Pathology Department
Fargo, North Dakota 58105
Telephone (701) 237-7854

Mail or deliver samples to local
County Cooperative Extension Service

Oklahoma State University
Disease Diagnostic Lab
Stillwater, Oklahoma 74078
Telephone (405) 744-9961

Dr. Paul Koespell or Dr. Jay Pscheidt
Oregon State University
Botany & Plant Pathology
Cordley Hall 1089
Corvalis, Oregon 97331
Telephone (503) 737-3472

Pennsylvania State University
Plant Analysis Lab
Department of Agriculture
Head House #4
c/o Tyson Bldg.
University Park, Pennsylvania 16802
Telephone (814) 865-2571

Puerto Rico
University of Puerto Rico
Plant Pathology
Box 5000
Mayaguez, Puerto Rico 00681
Telephone (809) 832-4040

Rhode Island
University of Rhode Island
Cooperative Extension Service
C.E. Center
Kingston, Rhode Island 02881
Telephone (401) 792-2474

South Carolina
Clemson University
Poole Agriculture Center
103 Barre Hall
Clemson, South Carolina 29634
Telephone (803) 656-3381

South Dakota
David Graper, Horticulturist
South Dakota State University
Agriculture Hall 110, Box 2207C
Brookings, South Dakota 57007
Telephone (605) 688-4147

Dr. G. Douglas Carter
University of Tennessee
Ornamental Horticulture & Landscape Design
P.O. Box 1071
Knoxville, Tennessee 37901
Telephone (615) 974-7114

Dr. Jerral Johnson
Texas A&M University
Texas Plant Disease Diagnostic Lab
Room 101 Peterson Bldg.
College Station, Texas 77843
Telephone (409) 845-8032

Utah State University
Plant Pathology
Logan, Utah 84322
Telephone (801) 750-2200

University of Vermont
Plant Diagnostic Lab
Plant & Soil Science Hills Bldg.
Burlington, Vermont 05405
Telephone (802) 656-0493

Mail or deliver samples to local
County Cooperative Extension Service

Washington State University
Plant Diagnostic Clinic
Route 2, Box 2953A
Prosser, Washington 99350
Telephone (509) 786-9271

West Virginia
Dr. John Baniecki, Extension Specialist
West Virginia University
Extension Service
P.O. Box 6057
Morgantown, West Virginia 26506
Telephone (304) 293-3911

Mary Heimann
University of Wisconsin
Plant Pathology
1630 Linden Dr.
Madison, Wisconsin 53706
Telephone (608) 262-1410

Mail or deliver samples to local
County Cooperative Extension Service

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