I took class on natural dyeing in the beginning of the summer and I though I share some of the things I dyed there. All of the plants I used for the colouring where collected in the beginning of June. Beginning of the summer is a great time for plant dyeing because the colours are more vibrant the earlier it is in the plants growing season (at least here in the north). The yarns I used where all 100% wool yarns and they were mordanted with alum. Read about mordanting here.
I used about 280 g of heather and dyed 108 g of wool yarn. First I soaked the heather in water over night. Then I boiled the heather in the same water for two hours. After that I dyed the yarn by boiling it in the sifted colour liquid for one hour.
For these yarns I used the liquid dye that was made out of onion skins. This was the third time that liquid was used. I added 3 g of madder powder and 1 g of cream of tartar to the liquid and I dyed 40 g of yarn. This really brightens the orange colour up. Check out my post for dyeing with onion skins here.
I used 319 g of birch tree leaves and dyed 73 g of wool yarn. You do need a quite a lot of leaves for dyeing a lot of yarn. I boiled the leaves in water for two hours and then I dyed the yarn by boiling it in the sifted colour liquid for one hour. To get a bright green colour like this, it’s important to use early leaves from the beginning of the summer.