I mordanted with alum and cream of tartar and then dyed with logwood. I used Ida Grae’s method soaking the chips with a pinch of cupric sulfate for a day and then heating slowly with the yarn (I tied the logwood in a bundle of nylon fabric). It never reached a simmer and I cooked it for about 45 minutes. I let it cool and soak in the bath overnight. I did an ammonia rinse on half the skein and got a bluer purple. In the picture, the top and bottom parts show the color with the ammonia rinse.

When my Mom and I visited Green Mountain Spinnery (really cool place!) this winter, they gave me a couple of small sample cones of a wool and cotton mix. Mom plied them (2ply) on her old spinning wheel and I took them home to dye. A couple of months ago I mordanted with alum and cream of tartar and then dyed with young hops shoots. I got a pretty pale yellow. This weekend I was dyeing with logwood and decided to try the little skein in the exhaust bath. I rinsed half of it in a pretty strong ammonia solution (a couple of tablespoons in a gallon of water) and the other half in a vinegar solution about the same strength. The vinegar didn’t change the light lavender color but boy did the ammonia! The picture shows the two exhaust colors on the wool/cotton and the original bath on superwash merino wool/alpaca/nylon sock yarn from Knitpicks.