I have been corresponding with a gentleman in England who found my article online about a dye recipe using green leaves (Barglar) and onion skins that I learned while working with Uzbekistan dyers a few years ago.
From the left are the results of the Barglar recipe on sheep's wool, spun wool and cotton and then a 2nd and 3rd dyebath from the same recipe. In the center is a walking stick, hand-carved that the Englishman purchased in Khiva on a visit. Beautiful! To the right of the stick are skeins and sheep's wool dyed with madder root.
You may read my entire article including the recipe a www.turkeyredjournal.com/ entitled "The Silk Threads of Khiva". Search in the Archives section on the left sidebar. Vol 13, Issue 1.