Eco-printing – Gumnut Magic

Good leaves to use for eco-printing: experiment two

May 8, 2017

I get asked a lot if the method I described in my ebook will work for non-eucalypts. These samplers are a good example of the results you can get using different types of leaves. Following on from the first experiment I documented, these leaves were left to soak for about 2 months before I used them, and it really made a difference! Some of the leaves printed better than others, but I really enjoyed seeing how so many different types of leaves, some native to Australia and some introduced species, can produce such clear and beautiful prints.

I sandwiched the leaves between two different pieces of cotton, to observe the difference in the prints produced from each side of each leaf:

These prints are of the ‘sky-facing side’ of the leaves (where applicable). Most produced a lot of colour, and the leaf outlines and veins are crisp and clear. They are printed onto a yellow woven cotton, which has created beautiful green hues for many of the leaves, in contrast with the bluer prints below.

These prints are of the ‘earth-facing side’ of each leaf, on a white stretch cotton. Some still printed very clearly, especially the maple, oak and blackberry leaves, while others produced only faint outlines.

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Eco-printing on wool versus cotton

February 12, 2017

I prefer eco-printing on cotton rather than wool for a few reasons. Cotton clothing is easier to find at op-shops, and in a wider range of styles, than wool. Upcycling clothing that already exists feels like the most ethical way I can do a lot of eco-printing, so it makes sense to go with what is readily available. I also love the wider range of colours and textures that I can get on cotton. Eucalyptus leaves mostly print solid colours on wool, whereas prints on cotton often have extra details like blue dots.

When I was writing my ebook, I wanted to show the difference between wool and cotton eco-prints. I did a range of small samples with the same leaf sandwiched between one piece of wool and one piece of cotton. It was so interesting to see the different colours that came from the exact same leaf on the different types of fabric. All of these photos show the wool on the left and the cotton on the right.

Some of the mordant on the cotton did transfer somewhat onto the wool, seen most starkly in the dark borders around the leaves and gumnuts above, so I can’t expect the same results with these leaves on unmordanted wool.

I was especially excited to get some more insight into which leaves dye best on wool. Lots of the eucalyptus leaves here in the Blue Mountains dye quite pale, especially without any mordant. I noticed that I got beautiful bright oranges from silvery-blue leaves, while the greener leaves dyed pale yellows on the wool. Almost all of my local gumtrees have dark green leaves, so I guess it’s lucky I’m not often wanting to get bright prints on wool!

Even more interesting, the leaves that dyed orange on wool consistently dyed brown on (iron-mordanted) cotton, while the leaves that dyed pale yellow on wool dyed blue or blue-green on cotton. I know that some green eucalyptus leaves do dye brilliant reds or oranges, but my local ones don’t seem to have the right chemical components for that.

I still have a lot that I want to investigate about different types of gumleaves and what factors influence which colour they dye, but this was certainly a useful experiment and a very good way to get to know more about my local leaves.

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