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From 19 until 21 October 2016, the EUROCITIES Environment Forum was held in Ljubljana, attended by some 115 experts in the field of water, waste, energy efficiency, climate change, biodiversity, green surfaces and air quality.

Within the framework of the event the City of Ljubljana prepared an exhibition presenting the results of the pilot project for processing Japanese knotweed into paper at a semi-industrial level.

For two years already the City of Ljubljana is offering free disposal of removed Japanese knotweed at its collection centres, and from there it is transferred to the incinerator. The pilot project for manufacturing paper from Japanese knotweed is an opportunity to find innovative solutions to deal with this invasive plant and its further uses, and is one of the circular economy practices in the City of Ljubljana.

Within the scope of the title European Green Capital 2016, a series of voluntary Japanese knotweed removal actions was organised during which the participants collected as much as 1,520 kg of knotweed, later on processed into 415 kg of paper. The production of paper from Japanese knotweed at a semi-industrial level is in itself a remarkable achievement, and an even bigger one is the production of useful items from this paper – notebooks and paper bags designed by the Re-generacija collective (Re-generation).

Partners of the Japanese knotweed processing pilot project are the City of Ljubljana, Pulp and Paper Institute, public waste management company Snaga, University Botanic Gardens Ljubljana and the Re-generacija collective.

The EUROCITIES network of cities was founded in 1986 by the mayors of six large cities – Barcelona, Birmingham, Frankfurt, Lyon, Milano and Rotterdam – and now the network counts over 130 of the biggest European cities and 40 partner cities with more than 130 million residents. Ljubljana is a member of the network since 1995, and since 2015 also a member of its Executive board.