I.Cl.S. - Feedback and Questions

We're delighted to hear from our visitors, with comments and/or suggestions about this web site, and to ask questions of the Society (one question at a time, please) on clematis related topics. But before you do, have you checked our Growing Queries page, your answer may be waiting for you there!

We get a lot of questions so please be patient. We aim to reply to all queries within 5 - 10 days, but at busy times, it may take us a little longer. But we believe the wait will be worthwhile.

Comments/Question Form


Please enter your name:
Your email address: (mandatory)
Home (country and county/state where you live): (mandatory)
Hardiness zone (for questions only): (U.S. definition - see note)

and type your comments or question in the box below (mandatory)


Please press SUBMIT to send. Unfortunately we have had to stop sending an acknowledgement due to abuse by rogue internet users. So before you do, PLEASE recheck your email address, since if it is wrong, you will never receive our reply!

Note - Hardiness Zones
It helps us to know in what climate you're trying to grow clematis and being a truly international society, we get questions from all over the world. The easiest way to express this is to use the US Dept. of Agriculture defined Hardiness Zones, based on average minimum temperature. However these can only give a rough guide to the climatic conditions.
The Zones are defined as follows:

Zone Average Annual Minimum Temperature
2 -45 C to -40 C -49 F to -40 F
3 -40 C to -35 C -40 F to -31 F
4 -35 C to -29 C -31 F to -20 F
5 -29 C to -23 C -20 F to -9 F
6 -23 C to -18 C -9 F to 0 F
7 -18 C to -12 C 0 F to 10 F
8 -12 C to -7 C 10 F to 19 F
9 -7 C to -1 C 19 F to 30 F
10 -1 C to 4 C 30 F to 39 F
11 above 4 C above 39 F


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@ 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.
@K.L.Woolfenden