Comfrey (Symphytum officinale) is probably the most popular dynamic accumulator. Permaculturists swear by it, and organic gardeners use it frequently. Thousands of web sites make all kinds of claims for it and if you believe the claims everyone should be growing comfrey to add nutrients to compost, mulch soil, and make plants grow better.
All of these benefits are derived from the fact that comfrey is one of the best dynamic accumulators – or so people claim. It is time to have a closer look at this miracle worker.