Lawn Grass as a Dye

Start with very fresh lawn clippings. Once the grass loses color, it won’t have any chlorophyll to make the dye bath. Remove any hard clumps. You want nice, long blades of grass. You can chop it up; I didn’t, and put it in a stainless steel pan of water. Pots made of aluminum or other materials can affect the color. You might or might not want to do that. 

The book recommends letting it sit for several hours. I didn’t do that either. I did simmer it for a good hour though and came out with a dark greenish brown dye bath.

I strained out the grass. You might want to use a muslin bag to put the grass in. I added some alum for mordant and a bit of cream of tartar for brightness. Then I put in wet, clean wool. I tried to have a proportion of at least twice as much dyestuff as wool. 

I simmered the wool for at least 30-60 minutes and let it sit for several hours. The color was again a pale yellow. I took half the wool out and divided that again in half. One half went into a pan of ammonia and water for a quick dip. Ammonia will brighten colors and sometimes even change them. This time it did make the yellow brighter and clearer. 

I have a disclaimer here. I tried multiple times to get a photo of the true color. It simply was not meant to be. The colors are pale and just resisted being photographed correctly. This is pretty close. The swatch on the right is the plain grass-dyed yarn with alum. The one on the left was dipped in dilute ammonia after dyeing.

I added some blue vitriol to the dye bath with the remaining wool. It immediately turned into a really pretty green. It’s not what the book said it would do, but often the type of plant and how you process it will make a difference.

 Here's a photo of the green on the left with a green from the fustic and blue vitriol on the right for comparison. 

Below is a color chart I used to match the colors with the plain alum on the left, ammonia dip in the center and with copper on the right.

According to Craft of the Dyer: Colour from Plants and Lichens  by Karen Leigh Casselman, grass gives a clear, strong yellow with alum. I only had alum and blue vitriol on hand this time so couldn’t experiment with the others. She lists the colors as:

• Clear strong yellow – Alum
• Brilliant yellow – Tin
• Gold – Chrome
• Tan – Blue Vitriol
• Soft Grey – Iron
• Yellow Green – Alum and Tin