Western Plant Growth Regulator Society

Who Are We?

The Western Plant Growth Regulator Society (WPGRS) is a educational Society dedicated to the science of plant growth regulation. The Society was formed November 1988.

Educational Conference

The Society sponsors a yearly conference covering both academic and applied research projects involving plant growth regulators (PGRs). This year the conference will be held following the 46th annual meeting of the Applied Association of Ecologists (AAIE). This year the WPGRS will be the afternoon of Feburary 1, 2011 at the Embassy Suites, in Monterey, CA.

Conference Invitation

The WPGRS wants to extend a special invitation to attend the 23rd Annual WPGRS Conference in Monterey, CA. The conference will be held February 1, 2011, at the Embassy Suites Hotel, 1441 Canyon Del Rey, Seaside, California. Get the latest research results from university and company research programs and more. Come hear the latest word on plant growth regulators from those "in the know".


Sustaining Members


OHP, Inc.

Valent USA

Fine-Americas, Inc.

Stoller USA

Valent BioScience

NCA BioTech




The Plant Growth Regulation Society of America (PGRSA) is a non-profit educational and scientific organization .

The California Weed Science Society (CWSS) provides professional education and information exchange on weed science, provides a forum for public isses on weed science and facilitiates cooperation among individuals, agencies and organizations. Please use the link above for further information on the Society and its programs.

Last update: January 5, 2011

latest news


The 23rd conference will be held in Monterey, CA at the Embassy Suites Hotel in conjunction with and following the AAIE Ecologoical Pest Management Conference and 46th Annual Meeting. Pre- and on site registration is $65.00 for this meeting. AAIE members may attend for $50.00. Students may register at the meeting for a fee of $15.00.

Sustaining Members

A special thank you to our Sustaining Members (listed to the left). You can visit their web-sites for product information and support through our web page links.

Become a sustaining member or join the Society. Use this link: Membership

Nominations are open for 2011. If you are interested in supporting the WPGRS as a officer, Board Member or simply to help with conference planning, please contact Tino Lopez for more information. Tino can be emailed at:


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