International Clematis Society Logo


Welcome to all Clematis Lovers

As editor of this website I sometimes have to pass on sad news about some members. Unfortunately, this month I have two such reports, relating to Eric and Glenis Dyer, and Lois Warren.

Eric and Glenis Dyer - 2022

Eric and Glenis Dyer have been members of this Society since at least 2003 and possibly earlier. Glenis was not only an enthusiastic clematarian, she was a very knowledgeable all-round horticulturalist and keen gardener. She attended several society events over their years of membership.

Perhaps less familiar to many members, but of utmost importance, Glenis has been one of my three proof-readers of the journal from Clematis International 2003 to the latest issue. Her wide knowledge of all things horticultural has been invaluable, and she did this every year without fail, irrespective of how busy she was with other things. Often she was very busy!

Glenis was 87 on the 24th June this year. In early August she had a severe stroke. Doctors said the prognosis was not good. She died peacefully on 13th August 2022.

Eric, her husband, was 90 years old in May this year. He'd been in poor health for some time, with spells in and out of hospital for a while (sometimes only out for quite a short time). Whilst in a care facility, he was admitted to Warwick hospital over the weekend and died peacefully on Monday 8th August.

The Society sends its condolences to their children, Angela, Carolyn and Stephen, their families and all her friends.
Lunch in Marietta, in May 2014, during the Society visit to the USA - (left to right) Dr. Ute Klatt, Michael Horlemann, Iris Clarke, Glenis Dyer, Fiona Woolfenden©Ken Woolfenden

Lunch in Marietta, in May 2014, during the Society visit to the USA
(left to right) Dr. Ute Klatt, Michael Horlemann, Iris Clarke,
Glenis Dyer, Fiona Woolfenden

Lois Warren 1942 - 2022

Lois Warren died on Thursday 18th August 2022. She was 79 years old. With her husband, Mike, they had been members of the Society since 1994.

Mike Warren will be known to many of you, for his appearances at many Society events, for articles he's written for the journal over many years, and for his beautiful photographs of clematis and other subjects which I've used in the journal over the years. Mike would invariably be seen clutching a camera to photograph not just clematis but many other plants, often for his horticultural slide library. Just behind, Lois would often be seen either carrying his camera bag, or a notebook to write down the frame number and details of the subject that Mike was taking.

However, Lois was a formidable gardener in her own right, with an extensive knowledge of many different plants and flowers.

The Society sends its condolences to Mike, their family and all her friends.
Lois and Mike Warren studying some of the plants in the garden of Jan van Kuijk during the Society visit to Belgium in 2011©Ken Woolfenden

Lois and Mike Warren studying some of the
plants in the garden of Jan van Kuijk during
the Society visit to Belgium in 2011

Denmark/Germany 2022

There will be a full set of articles about the gardens and other places we visited in the next issue of our journal, Clematis International 2023. But for those who can't wait, I will be publishing a series of informal illustrated reports. The second is now available at Denmark/Germany 2022 - Part 2

The first was available last month and you can find this at Denmark/Germany 2022 - Part 1

Clematis International 2022

Our latest journal, CI2022, was delivered by various means to all members who have renewed their membership for 2022.

So if you have not received a copy, please contact the Society, but not before checking that you really did remember to renew your membership, please. We still have a significant number of members yet to renew for 2022, so if you have not, please do so promptly. We will then send you your journal.

Finally, I thank all those members and others who, given the lack of a Society meeting / visit, rallied round to ensure an excellent selection of articles. I have no doubt that, when you receive your copy, you will agree with me.

Constitutional General Meeting

As said above, the Society meeting in Denmark happened in July, 2022. In the March Newsletter we said we intended to hold the Constitutional General Meeting (C.G.M.) during the Denmark meeting, using Zoom to open it to all members who wish to connect.

However, after further reflection on the practicalities of this plan, the Council has decided to postpone the C.G.M. until the Autumn, when it can be part of a zoom-based Webinar with one or more speakers. We believe that more members will be able to join in the zoom session, it will be easier for all to follow and logistically simpler to organize. More information will be available after the meeting in Denmark. Thank you for your understanding.

I.Cl.S. Webinars

Recordings of the last two public webinars, along with a video describing the benefits of being a member of the International Clematis Society, are available on both the member-only page and also here, at our I.Cl.S. Webinars page.

Details of our next webinar are yet to be finalized but will be communicated to members as soon as they have been decided.

The International Clematis Registrar, and the International Clematis Register and Checklist

The International Clematis Register and Checklist 2002, which went out of print some time ago, is available in electronic format. One benefit of this is that it allows text searching.

Details for The Register and all six supplements can be found via the RHS website at However because of the file size of the Register itself, approximately 25 Mbytes, it cannot be downloaded from the RHS web site in the same way that the supplements can. To help the RHS and reduce their workload, Society members wanting a copy should email Ken Woolfenden, I.Cl.S. Webperson and Editor, at icls editor, who will return a download link.

The Society fully endorses the work of the International Clematis Registrar, The International Clematis Register and Checklist 2002 and the six supplements published so far. We recommend all clematis lovers use the standards they describe.

There is, of course, still a need for all Clematis breeders, both professionals and amateurs, to register your Clematis cultivars with the Registrar to continue to keep the International Clematis Register up to date. If you want a copy of the form, information about it is available at the Clematis Registration Form.

International Clematis Society on Facebook

Don't forget to visit our Facebook page for updates on what's happening in our garden, as well as clematis news from other members. All you need do is click   Find us on Facebook   or use the button to your left.

Recommended Clematis

The Society's Clematis for Beginners List is now Recommended Clematis, reflecting the wider usefulness of this set of clematis cultivars for all clematis growers around the world. It was reviewed and revised during our meeting in Devon and Cornwall in 2015. It is available online and also as a downloadable version from our Recommended Clematis section, in Dutch, English, French, German and Swedish

All the clematis on the list are easy to grow, easy to look after and resistant to common pests and diseases, and whilst there are no absolute guarantees where gardening is concerned, most people should have success with all of these.

Because space is not so much of a problem, the online version of the list now contains more information about each clematis featured within it, along with a simple menu bar to let you see each group and then pick the clematis you're interested in. The downloadable version (no illustrations as yet, I'm afraid) is very suitable for taking with you when you visit your local nursery or garden centre!

Journal Index of Clematis References

A reminder of a facility which I'm sure many of you will find most useful - an index of references to all the clematis mentioned in the journals of the Society, both in the text and as pictures. I am indebted to Ton Hannink for all the work he has put into producing the first issue of this index. The index currently covers the years 2005 - 2014 inclusive. Further years will be added as they are completed. Whilst it is quite a large document, some 29 pages, it is not a particularly large file to download should you wish, just under 220 Kbytes. You can find it by visiting the Previous Journals page.

RHS Clematis Catalogue Collection

The Royal Horticultural Society of Great Britain holds a collection of Nursery Catalogues and have been keen to add to it. A number of years ago the Society was asked to canvas our members for any Clematis Nursery catalogues which they had and would donate to the collection, which we did. Quite a few have been donated so far.

Whilst he was the International Clematis Registrar, Duncan Donald extracted a list of catalogues from Clematis Specialists which are currently within the collection and a list of catalogues which feature clematis, but under such headings as "climbing plants" or "climbers". You can find them at RHS Clematis Catalogue Collection and RHS Climbers and Climbing Plant Catalogue Collection. Links to both these files can also be found via the "Information, Answers and Questions" link on the left of this page.

The Society has asked where further donated catalogues should be sent. As soon as we have this information it will be publish here.

Nursery Membership

The Society offers a second category of membership - Nursery Membership. So far we have been very pleased with the support that many nurseries have given by renewing as Nursery Members. We thank them all.

These Nursery Members can be found on a special Nursery Members page on this website.

The Society hopes you will recognize that, as members of this Society, these Nursery Members have a particular interest, knowledge and love of clematis and can be expected to provide a range and quality of plants, and informed knowledge, not usually available in non-specialist outlets. Please check this page regularly for additions.

Whilst it is now too late for your nursery details to be included in Clematis International 2011, any further Nursery Memberships will be published on this website as they are received and also in the List of Members when it is reissued at the beginning of next year.

Trialing New Clematis

An example of a Clematis Trial contract, mentioned in the article in Clematis International 2008 about trialing new clematis by well-known clematis breeder, Wim Snoeijer, can be downloaded by visiting the A.O.B. (Any Other Business) page accessible from our Information, Answers and Questions section.

How do you pronounce .....

If you're uncertain how to pronounce some clematis names, why not visit Clematis on the Web. A number of cultivar entries now have a helpful "how to say" feature.

A classic example is probably C. 'Mrs Cholmondeley'. How do you pronounce this? Just take a look at Clematis on the Web - Mrs Cholmondeley, click on the loudspeaker icon and find out for yourself.

This is an extreme example but I'm sure there are many others that people may be unsure of, but don't like to ask. Now you can find out in the privacy of your own home.

General Data Protection Regulation - GDPR

This Regulation applies to all organizations, large and small, that store personal data of EU and UK citizens electronically.

A draft Privacy Policy was drawn up and discussed at a previous Council Meeting. We are still working on modifications and amendments. Once completed and the resulting document is agreed by your Council, it will be released to all members and posted in this website.

The Society is committed to complying with this regulation. Should any member have any questions or concerns regarding it, please contact our designated Data Controller, Ken Woolfenden.

And finally ....

The ethos of the Internet is to be an open forum for ideas, views and opinions. Sites should encourage visitors to link to other sites, it's a two-way process. So if you've got a few moments, why not look at our Clematis Links page and follow up one or two. You may find a lot more than you were expecting!

For any non-members visiting this site, have you considered joining the Society? With plans for some very interesting meetings over the next few years there couldn't be a better time. For details, visit our How to Join page.

Last message - for any new visitors. If you cannot see a set of menu buttons down the left hand side of your screen your link to this site may be incorrect. Please re-visit by calling

Return to top of page

This site has been designed and built by me, Ken Woolfenden. I'm always interested in any comments or suggestions you have regarding this site. Please email me at
icls editor.
However, if you have a question please use the Question and Feedback Form.

RHS Affiliation No. 10570644

@ K.Woolfenden

All information contained at this site is personal to Ken Woolfenden and
does not represent the official view of the International Clematis Society.