
I get Native Plant Society of Oregon (NPSO) discussions by email. In a current subject dealing with bloom dates (phenology) for native wildflowers there was a link to the National Sustainable Agricultural Information Service ( [url:3m03tsli]http://attra.ncat.org/attra-pub/phenology.html[/url:3m03tsli]). This site is worth visiting for the breadth of subject matter covered related to plant flowering in various states.
I went there and found another link that I think HOS people will find informative and useful. Bee Culture (The Magazine of American Beekeeping) maintains an on-line version of the USDA publication entitled: Insect Pollination of Cultivated Crop Plants by S. E. McGregor (1976). The specific link to this publication is: [url:3m03tsli]http://www.beeculture.com/content/pollination_handbook/[/url:3m03tsli].
Chapter 5 is specific to Tree Fruits and Nuts and there are well written, definitive subsections dealing with the different fruit tree species (apple, pear, cherry, et. al.) If you want and need to better understand pollination, I highly recommend reading what this site has available. I certainly bookmarked it for future reference.
With the hope that all your flowers are visited by the bees !

Excellent source. I read not just chapter 5, but also the small fruit/berries section. Fun talking with you at the meeting. I put up some wood blocks with 5/16ths holes for mason bees, as my new house hasn't yet established the bees that my old house had. I'm hoping for better fruit/berry set this year.
John S
PDX OR
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Marsha H
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