Description
Logwood is a bushy, thorny tree grown in Mexico, Central and South America and parts of Africa. The purple dye is concentrated in the heartwood of the tree. Dyeing: For a medium to dark colour use extract at only 0.5-1 % WOF on mordanted fibre. Dye at temperatures no higher than 180 F and for no longer then 60 min or the colour will lack clarity and luminosity. All measures in dyeing are based on the weight of material to be dyed. This is known as the Weight Of Fibre (WOF). WOF gives a convenient way to state how much dyestuff is needed for a given shade, regardless of whether the dyer wants to colour a few yarns or several metres of fabric. The weight of dyestuff is expressed asa percentage of WOF. For example, to dye a medium-red with madder, we would use 50% WOF. Hence, if we had a pound of cotton (450 g) we would need a half-pound (225 g) of madder.^
Download Yu Yo's Guide to Natural Dyeing