A bit of cotton dyeing using home made tannin extract

I posted recently about solar dying wool with mulberries and I thought I’d now have a go dying some commercially spun cotton that I have already, and conveniently, put up into hanks. There are six 50g hanks, so I am hoping for 300g of lovely coloured cotton to play with.

I don’t dye cotton often, but I do know that it requires tannin as a mordant. Well, being a bit disorganized, if I’ve got any commercial tannin mordant I can’t find, so it was a relief when after a quick look in Jenny Dean’s Colours from Nature, I found that bramble leaves and twigs contain tannin. A bit more research on the internet suggests that mulberry leaves also contain tannin. It looks like this is going to be a multi-day effort.

DAY 1

One thing we have in plenty in the garden and surrounding fields is brambles and of course we have a mulberry tree, so I went on a little foraging trip. I collected a basket full of mulberry leaves and brambles which I chopped up and boiled for an hour as instructed in the book.

DAY 2

I left these to soak overnight and have just strained the liquor off into a pan and slightly reheated this.

I’ve just submerged the damp cotton hanks in the tannin liquid, and will leave this for 24 hours for the cotton to absorb the tannin. According to Jenny Dean there is a likelihood this will stain my white cotton and is bleached white slightly yellow, so we will see.

Hanks of cotton soaking in the home made tannin solution

Hopefully the mulberry dye will accommodate this and give me a nice color.

DAY 3

The cotton yarn after being soaked in tannin solution, a slight cream cast

After the tannin soak the cotton had taken on a slight creamy colour, not too bad at all. Maybe it didn’t take the tannin?

Straining the cooked and soaked mulberries to release the dye colour

I had prepared 1.5kg of mushy mulberries that weren’t really edible by cooking them up in some water and leaving them to soak and give up their colour overnight. I thought I was ready to get in with the dyeing, but luckily at this point I went back to Jenny’s book. Only then did I  realised that the cotton needed to be soaked in an alum mordant after the tannin. How did I miss this before?

The recommended amount is 4 tsp alum and 1.5 tsp of washing soda per 100g of fibre. Dissolve the alum and soda in enough water to cover the fibre,  and bring to a simmer. Then leave it to soak and cool for 12-24 hours.

DAY 4

NOW I can put the hanks in the dye..

This afternoon I took the yarn out and rinsed it. Then strained the mulberry liqour and put it in the old slow cooker I use for dyeing. I added some salt (not sure why but seemed to remember it helps the dye take) and then added enough water so that the liquid would cover the fibre. After that I immersed the yarn in the dye.

Fingers crossed it will work.

First dipped hank… Now it needs to sit in the dye overnight…but we all know it’s probably going to wash out…

Well, the hanks came out looking lovely, but as predicted, the colour mostly washed out. It’s not a bad colour, it’s very a pale, lilacy grey, just not the pink I hoped for.

The final colour, a pale lilac grey.

Onion skins and Eco-Dyeing

Jacob’s fleece spun into a marl yarn and mordanted ready for dyeing

I’ve got a pot of onion skin dye ready to tie-dye a silk scarf and a skein of hand spun Jacobs marl yarn.

The yarn changed colour during the mordanting, and the cream ply has taken on a pale golden yellow tone. I think I will dip dye it to preserve this rather pleasant effect. Let’s hope the pale yellow doesn’t wash out at the end!

The scarf is already dyed in an ombre effect from grey to white, but cool greys don’t suit me; I want a warmer golden colour. The underlying ombre effect will be interesting, and I’ve tried marbles in in a pattern. I may add some eco prints on too, I’ll see what happens with the tie dye.

Rinsing the silk and wool after mordanting the fibres

I’ve rigged up a spoon and bowl into a frame to hold the hank of yarn whilst being dip-dyed.

I use a neat little induction hob from Ikea for dyeing to save energy as we have solar panels.

A steamy view of the dyeing process

The yarn was a little disappointing. I think I didn’t have enough dye material in the bath, and the silk took it up faster than the wool. However I dunked it into an iron mordant and it’s slightly saddened it into a softer yellow that blends better with the darker ply.

The scarf was ok, tie-dyed but wishy-washy and unexciting. So plan B, to eco print on it, came into action. During my dog-walk I collected a variety of leaves, luckily there is a small cluster of sumac and lots of Oak varieties in our local park.

My trawl of leaves, including Sumac, Oak, Maples and others

I also collected a few bunches of Rowan berries, beech and other leaves.

In my excitement I forgot to take a picture of the tie-dyed silk, or of laying out the leaves. I did that lengthwise along half of the width of the scarf, then folded it in half to sandwich the leaves between two layers. I’m not sure if this would have worked better if I had waited until the scarf had dried; I added the leaves directly after rinsing it after tie-dying.

Not having a spray bottle handy that I wanted to use for iron mordant solution, I’d already decided to soak the whole thing in the iron solution. Before doing that I folded the scarf widthwise once again and then tightly wound the folded scarf around a short length of plastic pipe, securing the ends with elastic bands. After giving the rolled packages a good soak in iron I used load of string to bind the fabric really tightly to the pipe all along its length.

Then it went into an improvised steamer for an hour. Unfortunately, because the steamer set-up only allowed a shallow water bath, I managed to boil it dry! This has mildly effected the outer layer on the underside of the pipe. It’s a bit darker.

For good measure I dribbled a bit of copper mordant on it as well. The effect was so strong that the white plastic pipe has now got leaf prints on it as well!

After unwrapping the scarf from the pipe, and following thorough wash it has come out rather well I think. Miles away from the boring grey one anyway!

George the cat approves of it as well!

George gives the finished scarf the seal of approval.