Natural dyes from invasives

I’ve been researching natural dyes for textiles, and got interested in the possibility of using invasive species to make dyes. After all, if you’re going to pull up the plants anyway, why not do something with them? Here’s a list of invasive plants in Massachusetts, and also a list of plants likely to be invasive.

I’m still in the research phase, and haven’t actually tried any of these myself. Many of these appear to be recipes for dyeing wool yarn. Nevertheless, here are some possibilities I found:

Other non-native species that can be used for dyeing:

Unfortunately, much of the material I found online is not entirely useful. Some of the webpages linked to above just say that the plant can be used as a dye, but with no indication of mordants, length of time in dye bath, color-fastness, etc. And many of those dyeing are only interested in dyeing wool yarns, while I’m more interested in tie-dye projects for kids (here’s info on mordants for cellulose, e.g. cotton, fibers). Anyway, I’m planning to do some invasive species dyeing myself, and if I do I’ll give some more details.