Welcome to the Passiflora Society International website!

We currently have 2 tiers of membership, and one of them is FREE!  Click below to register for your membership.

Join the PSI now, and receive the many benefits associated with membership!


27th May, 2019

Registration is now open for the 2019 PSI conference in Madeira. To reserve your place please follow the link below. To be certain of your place please do so BY 30TH JUNE. 

Madeira Header

15th May 2019

SPECIAL OFFER UNTIL 30th JUNE 2020: To compensate for recent reduced levels of service, the price of premium membership has been slashed from $30 to $10 for all those subscribing or renewing their membership between now and 30th June 2020. To take advantage of this offer, please go to the Join page.

Official notice of the AGM on 16th June has now been published on the the Meetings page

21st April, 2019

PSI is pleased to announce that the 2019 meeting will be held on the island of Madeira from 10th to 13th October. The AGM will be held separately on 16th June. For more details of both please see the Meetings page.

March 15th, 2018

The PSI seed bank is now accepting seed donation from members.  If you are interested in donating seed to the seed bank, please contact the seed bank curator Jorge Ochoa at psi-seedbank@passiflorasociety.org

Jorge will provide additional information as well as a shipping label with an address for the seeds to be shipped to.

Please ensure that the seed meets the following packaging and shipping requirements:

  • A typed or legibly printed seed list/invoice accompanies each shipment with the name of the collector/shipper, the botanical names (at least to genus, preferably to species level) listed alphabetically, as well as the country of origin, and country shipped from, for each taxon. Each seed packet should be clearly labeled with the name of the collector/shipper, the country of origin, and the scientific name at least to the genus, and preferably to the species, level.
  • There are a maximum of 50 seeds of 1 taxon (taxonomic category such as genus, species, cultivar, etc.) per packet; or a maximum weight not to exceed 10 grams of seed of 1 taxon per packet;
  • There are a maximum of 50 seed packets per shipment;
  • The seeds are free from pesticides;
  • The seeds are securely packaged in packets or envelopes and sealed to prevent spillage [Note: we recommend that seeds are packed in re-sealable, clear plastic envelopes to facilitate inspection];
  • The shipment is free from soil, plant material other than seed, other foreign matter or debris, seeds in the fruit or seedpod, and living organisms such as parasitic plants, pathogens, insects, snails, and mites; and at the time of importation, the shipment is sent to an approved port of entry listed in the permit.


Jan 23rd, 2018

** The PSI is proud to announce the 2018 PSI meeting shall be held this year in Germany. Dates are set from the 14th to the 16th of September.  In order to reserve your place please follow the link below to sign up. 


January, 2018

** Happy New year from all the PSI officers! Stay tuned for an exciting year with many new announcements including the location of the 2018 PSI meeting.

September, 2017

** The PSI Meeting 2017 held in Colombia was one not to forget. Many thanks to all who attended and see you all next year.


May 3rd, 2017

Our latest newsletters from 2016 are ready to be ordered. Make sure to receive your copy by becoming a member today.

Articles included in these editions:
– PSI Meeting 2016 Report, The Netherlands
– Changes in the PSI!
– Introducing our new officers
– The three go to Suriname by John Vanderplank
– Biography from Italian artist Luca Massenzio


Feb 22nd, 2017

** The PSI Shop has been redesigned and now includes all back issues of the PSI Newsletters that are available online via our shop for purchase.



Feb 2nd, 2017

** The PSI website is up and running again. We apologize for this lengthy down time over the Christmas period. A big thanks to our Web Master Liza for all the hard work and hours put in to bringing it online once again.


Feb 2nd, 2017

** The PSI is proud to announce the 2017 PSI meeting shall be held this year in Colombia. Dates are set from the 1st to the 4th of August. We currently only have 35 spaces available which are based on first come first served. In order to reserve your place please follow the link below to sign up. 

PSI Meeting 2017 poster

Sign up PSI 2017

August, 2016

** The PSI Meeting 2016 held in The Netherlands was a great success. Many thanks to all who attended and see you all next year.

DSC_9828 - Copy


** PSI Special Edition Nr 1 2015 – A Revision of Passiflora Section Dysosmia now available for ordering. Please check our other newsletters in the Shop for a wider selection on order.

2015 Special Edition #1 - Dysosmia

Special Editions: 2015 Special Edition #1 – Dysosmia

PSI Special Edition Nr 1 2015 – A Revision of Passiflora Section Dysosmia

Find out more on MagCloud


Feb 2nd, 2017

** Join us on our Facebook page to connect with other members and Passion Flower lovers. Share your photos and growing tips and keep up to dated with all the latest news.

Oct 20th, 2013

** The location for the 2014 PSI meeting has just been announced!  It will be in England, mid-September.  More information will be emailed to all members and posted on Facebook as we progress closer to the date.

Sept 19th, 2013

** The Fall 2012 Newsletter was shipped recently to all Premium Members, and the Spring 2013 Issue is currently being prepared for printing.  The Seed Bank is still open for a bit longer!  Take advantage of it while you can…

May 30th, 2013

** The first seed sale was a HUGE success!  Some changes need to be implemented, and the shop will be re-opened soon for another brief period.

April 19th, 2013

** We just broke 20,000 hits from over 2,400 unique visitors in 50 countries, with almost exactly half the hits coming from the USA.  We truly are an International Society!

** Our first big Seedbank sale is only a couple of weeks away! We have stopped taking donations, and are tweaking the system to make sure everything works smoothly before we release the official dates, but we are very close… so stay tuned. PLEASE be sure you are a Member of the PSI on the website if you wish to participate in the sale: www.passiflorasociety.org/join/

** The Fall 2012 Newsletter will be sent to the printers next week. If you are a Premium Member, expect it in your mailbox in May! We may be still playing “catch-up”, but the Spring 2013 newsletter is nearly complete as well, and should be shipping this summer, as well as our Fall issue getting close to completion.

January 1st, 2013:

– Happy New Year to us!  This new PSI site has now had over 10,000 hits from more than 1,100 unique visitors from 50 countries in just the few short months since launch!

We are constantly adding content, so be sure to check back often…


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