The pigment paste is carefully filtered using processes that Stony Creek has developed specifically for indigo. I will post an additional link to my story of creating the indigo bacterial vat with my produced indigo in 2019. I first met Sarah Bellos of Stony Creek Colors in 2016 when she spoke at the Growing Color Symposium at the NC Arboretum in Asheville. Right now, they need to focus on the work at hand and continue to develop their current products: indigo, black walnut paste extract (that really works! The idea for the Sukumo Cooler came from discussions in the Indigo Pigment Extraction Facebook Group. ( Log Out /  When too much lime is used during the process, it will remain in the indigo pigment and skew the weight of any available indigotin. And to think some people think blue is just blue . I didn’t know anyone who had successfully grown indigo dye plants on the scale that she described. Catharine, Thank you for sharing this information. ( Log Out /  Some people really are dedicated to succeed where most people think it is impossible to achieve success. • Includes a link to growing instructions, information and tutorials on using the fresh leaves for dyeing. I hope that you will consider helping to grow this promising endeavor by trying out their excellent indigo, and other extracts available for order online at their website. ), and was the most important blue dye in East Asia until the arrival of Indigofera from the south. Change ), You are commenting using your Twitter account. I had envisioned a small plot of Persicaria tinctoria but was amazed to find that the test farm was a densely planted, multiple acre farm tract where several strains of Persicaria tinctoria are growing next to the tropical varieties of indigo (Indigofera suffruticosa and Indigofera tinctoria). Persicaria tinctoria from the previous year's harvest was processed in the Sukumo technique, (see full scale sukumo here). Stony Creek employs skilled and smart people, who know chemistry, plants, agriculture, and manufacturing. I have used their indigo and it is excellent. Persicaria tinctoria is a species of flowering plant in the buckwheat family.Common names include Chinese indigo and Japanese indigo. Also known as Japanese indigo. Tues - Sat 11am - 3pm, Sun & Mon Closed. Thanks for reporting on this inspiring story, and giving us a way to support their important work. Japanese Indigo Seeds Each packet contains 15g / ½ oz/ 2 tablespoons of Japanese Indigo (Polygonum tinctorium, Persicaria tinctoria) seeds. This project sounds serious and wish for them a long life of growing blue and other nice pigments. . We usually start our seeds indoors in the beginning of March but some will volunteer in the garden as early at January in Oakland! Several hours later, each batch of leaves had produced a small amount of indigo pigment. Which plants can be dried for future extraction? Found in east Asia, the plant can grow … I sensed that this was part of each day’s work at the lab. The farmers, who grow the indigo, are benefiting from a cash crop that has the potential to replace the tobacco that grew here for so long. Thanks Catharine. Of course I will purchase my indigo from them! The plant belongs to the buck wheat family and produces a beautiful blue green aqua color on silk and wool (protein fibers) using a very simple 'fresh leaf' method outlined here on my blog . Change ), You are commenting using your Google account. I continue to grow my little patch of indigofera suffruiticosa every year, so I knew that it could be grown successfully in the region. On a recent visit to Stony Creek near Nashville, TN I was very pleasantly surprised and now believe that they are truly on the way to something successful and very much needed. Stony Creek precipitates indigo pigment without the use of lime (calcium hydroxide). The leaves of this plant are used by natural dyers to attain the color blue. Walking in the door I saw that the dye chemist, Summer Arrowood, was pulling leaves from Persicaria tinctoria stems that had been harvested earlier that morning. I keep Stoney Creek in my mind for future purchase. Next to Indigofera tinctoria they have some of the highest concentration for the dye. These are the white flower variety, the same variety Rowland Ricketts is growing in Indiana. The extraction without lime is one of the reasons the pigment has such high levels of indigotin. Japanese Indigo (Persicaria Tincotoria -or- Polygonum Tintorium') is a favorite variety of indigotin bearing plant to grow in temperate to hot areas. There are many ways to extract the indigo from this plant from using it fresh to composting it! The pretty pink flowers of the indigo plant are a great addition to your cottage garden. Next, individual bags of leaves (from very specific plants in very carefully identified locations at the test farm) were processed to extract the indigo pigment. I live nearby. The factory is set up with modern equipment, carefully laid out, and efficient. Enter your email address to follow this blog and receive notifications of new posts by email. Why grow so many different types of plants? The Production of Indigo Dye from Plants is the final report in a three-part series. We will get two harvests and one last harvest of seeds. . The suffruticosa I started in pots, then transplanted in the ground. Stony Creek is currently selling indigo paste to denim producers and they are able to test/replicate the warp dyeing process used by the denim industry in their lab. We hand picked and cleaned the seeds carefully for the best germination rate. I just bought some from Yoshiko and can’t wait to try it. My tiny patch of indigo growing on my front lawn has produced beautiful, healthy plants high in indicatin. These were tested, labelled and stored for future reference.