A Joint Research Report on the Spiderwort-dyed Paper Production Technique Has Been Published
Spiderwort-dyed paper is a type of Japanese paper, which is soaked in the extract from Asiatic dayflower petals. The paper is used as a dyestuff to make rough sketches during the production of Yuzen-dyed fabrics. From 2016 to 2017, the Department of Intangible Cultural Heritage in association with Kusatsu City, Shiga Prefecture conducted a joint research on the spiderwort-dyed paper production technique and, in 2018, published a project report titled, “Joint Research Report on the Spiderwort-dyed Paper Production Technique: Kusatsu Techniques that Form the Backbone of Textile Dyeing Technology” (DVD included).
This report was compiled by staff from Kusatsu-juku Kaido Koryukan in association with researchers from Tokyo National Research Institute for Cultural Properties and included the following studies: a record of the techniques employed by three producers of spiderwort-dyed paper; a study on the soil in which Asiatic dayflowers are cultivated and the preservation of the extract from Asiatic dayflower petals; a study on the Japanese paper that is used to make spiderwort-dyed paper; a study of ancient documents relating to spiderwort-dyed paper; a questionnaire survey of producers and users of spiderwort-dyed paper; and a study on the positioning of spiderwort-dyed paper as a cultural heritage. The data obtained from this joint project is being stored in cooperation with Kusatsu City and can be applied in future research.
Beginning from this year, Kusatsu City is implementing measures to safeguard the spiderwort-dyed paper production technique. Techniques for producing materials used in intangible cultural heritage are sometimes appraised as techniques to safeguard cultural heritage (Selected Conservation Techniques). In addition, spiderwort-dyed paper will likely be appraised as a regional folk cultural asset of Kusatsu. We hope that this report will inform many more people about the spiderwort-dyed paper production technique and will engender lively discussion toward its safeguarding.