Tag Archives: indigo dye

Woad Vat

The frosts are coming so it was time to cut back all of my Woad and Japanese Indigo plants. I harvested about 800 grams of fresh leaves from about 10 woad plants and about 250 grams of fresh leaves from the Japanese Indigo plants.

There are many different instructions on how to make a Woad or Japanese Indigo vat using fresh leaves. I read through several and thought I would try my own approach. I followed a similar procedure for both the Woad and Japanese Indigo vats.

The directions I’ve read warn that Woad (or Japanese Indigo) is sensitive to hot water >90 Deg C yet the woad needs to be heated up to help release the indigo pigment.

I used hot tap water rather than heating this on the stove, so I could control the amount of heat. Since my tap water wasn’t quite hot enough, I added a kettle full of heated water to the water to raise the temp to about 80 deg. C. I cut the woad leaves into small pieces and let them soak in the hot water for about an hour.


Apparently 115 deg F (or 46 deg C) supposed to be the optimum temperature for the release of Indigo pigment from the plants.
When the temperature decreased to <50 deg C I scooped the cut leaves into an organza mesh bag. I thought that this would help prevent the messy leaf sediment in the bottom of the indigo vat. Then I transferred the Woad dye water into a large plastic bucket. I thought I would try to use a fructose fermentation method, following Michael Garcia's 1,2,3 guidelines, as I've had good success with my previous Fructose Indigo vat.
I have no idea how much indigo pigment is really in the leaves, so I added 20 grams of Calcium Hydroxide to the indigo vat and 40 grams of Fructose. The pH rose to 10.4.
I put the organza mesh bag filled with the Woad leaves back into the bucket and put the lid onto the vat. I did the same with the Japanese Indigo vat.
I checked both of the vats about an hour later and was pleased to see some blue bubbles and the organza bags turning blue.

Japanese Indigo Vat
Japanese Indigo Vat

Woad Vat
Woad Vat

Now I wait patiently.. perhaps tomorrow I can dye some beautiful indigo grown in my own garden.

Books
Indigo from Seed to Dye

Indigo: Dye It, Make It: Techniques from plain and dip-dyeing to tie-dyeing and batik, in natural indigo blue

Wild Color, Revised and Updated Edition: The Complete Guide to Making and Using Natural Dyes

Natural Dyes

The Art and Craft of Natural Dyeing: Traditional Recipes for Modern Use

References
An Easy Organic Indigo Vat
Preparing to Dye with Natural Indigo
Creating a Natural Indigo Dye Reduction Vat
Cold Water Fresh Leaf Indigo Vat Dyeing
Indigo Vat Basics
Japanese Indigo

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Spin Flora Dot Com

When I was asked by the AGWSD to teach a workshop on spinning flax this coming summer at their Summer School, I started to do some research on spinning with plant fibres. Never did I expect to fall down such a large rabbit hole! I started by ordering a few small sample packs of different flora fibres, flax, hemp, ramie and a few of the new plant-based fibres such as banana and seacell that have recently come onto the market. I fell in love with the variety and the textures that these plants have to offer. Spinning flora took over in my studio. As I used up my plastic crates filled with wool, they quickly filled up again with a delightful assortment of flora fibres.

Spin and Weave Flora
Spin and Weave Flora

I generally like to use acid dyes for dyeing wools and silk, but of course, the acid dyes won’t work on cellulose fibres. So I decided that really – plants should be dyed with plants. I rummaged through my dye stash and found a supply of madder root, indigo, osage, and other natural dyestuffs. And began to experiment.

Indigo Fructose Dye Vat
Indigo Fructose Dye Vat

Each of the fibres have their own unique characteristics. Some are soft and slippery, some feel like the finest of silk, some are a bit rough and coarse. They all need to be spun with a slightly different spinning technique. They can also be blended with each other or with wool. Handspinning with flora fibres are also a lovely alternative for those who are allergic to wool or who prefer not to use animal fibres.

Spin Flora grew and it was time for it to have its own website – a place where you can explore this world of Flora and also purchase a few samples of your own to experiment with.
I hope that you will visit Spin Flora not Fauna