Hibiscus, though best known as tea, is a surprisingly fun dye. It is great to do at home and with children. It will give you a multitude of colours, from beautiful earthy cool purples to warm pinks and dark greens. This recipe, PDF, walks you through the steps of home dyeing wool or silk based yarns or fabric with Hibiscus Dye.
Hibiscus is not colourfast and PH sensitive