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Passiflora Society International

Cultivation, new species, new cultivars

Welcome to Passiflora Society International (PSI)

Our Mission

PSI is dedicated to the conservation of the genus Passiflora through

the sharing of knowledge of the genus, its species and cultivars throughout the world
the promotion of cultivation and propagation of living collections
encouraging the creation and registration of cultivars for their flowers, fruit and other characteristics
seeking ways to ensure the survival of endangered species and cultivars.

Our Activities

Our activities and services include:

annual conferences around the world and other meetings
the journal Passiflora, the official register of Passiflora cultivars, other publications
an email newsletter
cultivar information and registration
seedbanks
a Facebook group

Membership

New members are always welcome. Choose from two levels:

Basic membership: free of charge
Premium membership: annual subscription and enhanced benefits

Management

PSI is run by an elected Management Committee elected by premium members and chosen from them, with Officers appointed by the committee.

Volunteers are always welcome, especially with specific expertise – cultivation, taxonomy, plants, IT, publishing – tell us how you can help!

More information and contact

If you cannot find what you are looking for on this website, please complete the contact form and we will get back to you as soon as we can.

LATEST PSI NEWS

The European Seedbank is now closed for the season. Thank you to Robert Dostal for organizing the sale and making it such a success, as always!
Thank you to all the purchasers! If you have not yet received your seeds, they should be on the way shortly. However, if you are concerned, please email EuropeanSeedbank [at] this domain.

Please be advised that the prices are under review for future sales, in order to generate additional funds for grant-giving.

Meanwhile, we would be very grateful for any seeds you are able to donate, following the instructions here.

First published on 13 December, 2024.

Robert Dostal will open the Fall 2024 European Seedbank Sale to Premium Members on Friday 29th of November, and to Basic Members as well on Saturday, 7th of December. Those who have kindly donated seeds will be able to access the sale a few days earlier. For more details, please go to the European Seedbank page. You will also be able to preview the sale once you have logged in.

Members living outside the EU are also welcome to order from this sale, but please understand that we are unable to guarantee delivery.

To support our new Grant initiative, seed prices have increased to €3.50 per bag for Premium Members and €5/bag for Basic Members.

If you are a Basic Member and want to take advantage of the lower price, as well as priority access to the sale and other benefits, it is not too late to upgrade your membership. Premium membership starts at just €18 per year, during which there will typically be two American and two European sales – so do the math! More details on the Renew / Upgrade page.

Meanwhile, we would be very grateful for any seeds you are able to donate, following the instructions here.

First published on 19 November, 2024.
Last revised on 13 December, 2024.

The American Seedbank is now closed for the season. Thank you to Bob Holzinger for organizing the sale and making it such a success, as always!
Thank you to all the purchasers! If you have not yet received your seeds, they should be on the way shortly. However, if you are concerned, please email AmericanSeedbank [at] this domain.

Please be advised that the prices are under review for future sales, in order to generate additional funds for grant-giving.

Meanwhile, we would be very grateful for any seeds you are able to donate, following the instructions here.

First published on 14 November, 2024.

The sale is now open to PSI Premium Members and can be found here.
All other members can continue to access the preview page here.

First published on 2 November, 2024.

Bob Holzinger will open the Fall 2024 American Seedbank Sale to Premium Members on Saturday, November 2nd, and to Basic Members as well on Saturday, November 9th. Those who have kindly donated seeds will be able to access the sale a few days earlier. For more details, please go to the American Seedbank page. You will also be able to preview the sale once you have logged in.

Members living outside America are also welcome to order from this sale, but please understand that we are unable to guarantee delivery. To ensure seeds arrive in the best possible condition, Bob will box up all orders.

If you are a Basic Member and want to take advantage of this low price (instead of the standard $5), as well as priority access to the sale and other benefits, it is not too late to upgrade your membership.
Premium membership starts at just $20 per year, during which there will typically be 2 American and 2 European sales – so do the math! More details on the Renew / Upgrade page.

Meanwhile, we would be very grateful for any seeds you are able to donate, following the instructions here.

To support our new Grant initiative, seed prices have increased to $3.50 per bag for Premium Members and $5/bag for Basic Members.

First published on 22 October, 2024.

Many thanks to all of you who completed the questionnaire about our ideas for the 2025 conference.

We’re pleased to say that the proposal to hold it in Medellin was well-received, and outscored the other options, so we’ve decided to go ahead.

As stated previously, it will be some time in April or May, the precise dates to be agreed with the Passiflora Export Association and announced in about a month’s time.

First published on 12 October, 2024.