The plants listed in this brochure have a rating of less than 4
on the OPALS scale developed by Tom Ogren, author of
Allergy-Free Gardening. The OPALS scale takes into
account the method of pollination, plant family, size, fragrance,
length of pollination time, and other pollen factors.
Thanks to Vincent Lazano at U.C. Cooperative Extension,
County of San Diego, Steve Brigham, Buena Creek
Gardens, and Kenneth Anderson, Walter Andersen Nursery
for their assistance.
For a more extensive list of low-allergy plants and trees, see
www.sdrac.org or contact:
Joni Low (619) 297-3901 ext. 112 |
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