Hi, Kris, thank you for your helpful reply. Procion dyes do not need hot water- that is one of the best things about them. They are suitable for plant based materials, cotton , bamboo, hemp, tencel, and slik (although technically, silk is an animal based fiber, I think?) etc. Here is a link to Dharma Trading who has the best prices. http://www.dharmatrading.com/html/eng/3796-AA.shtml?lnav=dyes.html
I wish I could start dyeing right this instant, but I have 2 big projects due Oct 10, so until then I will read your book and think about what i woudl like to do in the future!