Garden Allergies

Allergy-Free Gardening with the Ogren Plant Allergy Scale...

"Allergy-Free Gardening" by Thomas Leo Ogren. Revolutionary Guide to Healthy Landscaping. With OPALS, the Ogren Plant Allergy Scale.... 
http://www.allergyfree-gardening.com

Poison Ivy, Oak, and Sumac Information Center (poisonivy.aesir.com)...

Poison Ivy, Oak, and Sumac Information Center. Discussion Boards, FAQ, Treatments and Cures... 
http://poisonivy.aesir.com

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