Natural Dyes – Rhubarb Leaf Mordant

Rhubarb leaves contain oxalic acid, a poisonous substance, but it can be used as a mordant.

Difficulty Level:
Average
Time Required:
4 hours

Here’s How:



  1. Wear rubber gloves and protective clothing.
  2. Cut rhubarb leaves into small pieces and place in a large dyepot filled with water.
  3. Simmer for 2 hours, covered. Avoid vapor inhalation.
  4. Strain the mordant liquid, removing the leaves.
  5. Place clean, wet wool into the rhubarb mordant liquid and simmer 1 – 2 hours.
  6. Allow the mordant to cool before removing the wool.


Tips:

  • If you grow rhubarb, the rhubarb leaves do naturally compost in your garden and are not generally considered dangerous
  • But Rhubarb leaves contain oxalic acid which is toxic. Store covered and keep away from small children or pets.

  • Rhubarb roots can produce shades of orange and reds.
  • Rhubarb stalks make wonderful pies.

    How To Make an Alum Mordant
    How To Make a Tin Mordant
    Natural Dyes and Mordant Recipes

    Natural Dye Books
    Wild Color, Revised and Updated Edition: The Complete Guide to Making and Using Natural Dyes
    Botanical Colour at your Fingertips
    The Modern Natural Dyer: A Comprehensive Guide to Dyeing Silk, Wool, Linen and Cotton at Home
    A Weaver’s Garden: Growing Plants for Natural Dyes and Fibers

    The Rainbow Beneath My Feet: A Mushroom Dyer’s Field Guide
    Harvesting Color: How to Find Plants and Make Natural Dyes
    A Heritage of Colour: Natural Dyes Past and Present by Jenny Dean (2014-06-10)
    Wild Color, Revised and Updated Edition: The Complete Guide to Making and Using Natural Dyes
    The Art and Craft of Natural Dyeing: Traditional Recipes for Modern Use
    EBAY – NATURAL DYES
    NATURAL DYES – US
    NATURAL DYES – UK

    Last Updated on March 21, 2021 by Paivi Suomi

  • By Paivi Suomi

    I've had an interest in weaving, looms, yarns and textiles since I was a small child. I learned to knit, crochet, sew, do needlepoint at my mother's knee. My grandmother was a Saami from northern Norway. I am very interested in studying more about traditional Saami and Finnish style weaving and handicrafts. Paivi Suomi