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Matjaz Mastnak

Assistant Director at Volčji Potok Arboretum


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Northern Roses in Southern Climate


In the collection of rose gardens in Arboretum Volčji Potok, Slovenia, they take care for about 1250 rose varieties. Among them, there are some dozens of roses that were bred in northern Europe or Canada or are found roses from there. After ten years of observation of their growth and flowering it is possible to make conclusions how they perform in long, warm and humid climate on the sunny side of the Alps. Some northern roses are valuable for their early vegetation which brings rose flowers three weeks earlier to the main flowering season. A group of northern roses has problems with leaf health, while others perform very well. An interesting phenomenon is the stability of petals’ color under the stronger insolation on lower latitude. The lecture is based on the practical experience from Arboretum Volčji Potok.


Matjaž Mastnak is an assistant director at Volčji Potok Arboretum, Slovenia. After finishing his studies of forestry, he specialised in ornamental woody plants. Since 2002 he has been the head of Arboretum’s rose garden, which won the WFRS Award of Garden Excellence in 2022. He is a lecturer and author. He also gives advice on TV. He is the secretary of Slovenian Rose Society, a member of Heritage committee of WFRS and a judge at rose trials in Europe.

Seminar Day Tickets

We are so very happy to welcome you to our seminars on the 3rd and 6th of July at the congress center Kalmarsalen in Kalmar. This will be a unique occasion for all of you who have roses as your special interest to learn more.

This will also be a very good chance for you who work with roses, or perhaps with tending and planning urban environment, to attend seminars where rose experts from all over the world will share their knowledge on different aspects according to the rose.

Starting at 1 195 SEK.