Logwood - the heartwood of the logwood tree, Haematoxylon campechianum, yields deep,
rich red purples to orchid blues and was prized as a dyestuff since the 16th century. Mixed
with iron, logwood gives good blacks – a colour difficult to achieve with natural dyes.
Logwood has good washfastnes but moderate lightfastness – a bit of iron improves the
lightfastness dramatically. Logwood chips will give a medium depth of shade at 10-15% wof.