I'm curious, do you grow any other amendments for your soil or worm bins? I was considering stinging nettle and horsetail
Never bothered for several reasons. Mainly, they are easy enough to collect in the wild, but the main reason, compared to comfrey, they take forever to break down (great for a compost pile though). Comfrey, unfrozen, takes about a week. Frozen for a few days, reduces that to ~2 days till it's black goo.
Second, comfrey is more complete across the board, nutrient wise, grows extremely fast and the worms love it. When you get 4-6 clear cut harvests per season, that kinda seals the deal for me. I'm 72, so woods walking excursions are a thing of the past.
But, by harvesting half of my 8 plant comfrey bed, I can feed all 7 of my worm bins. 2 weeks later, I clear cut the other half and 2 weeks after that, the 1st half is ready to be cut again. It really grows that fast.
Another trick learned from fruit and nut growers is to plant comfrey between rows, or, a few feet out from the main trunk and left alone. Just the natural growth of the comfrey is like a perpetual top dress of both nutrients and minerals that the trees can't reach. The main comfrey tap root can reach up to 15' deep in the soil, way deeper than the trees can reach. Getting mowed over is NBD, since the crown and the important stuff is well underground and protected.
It's just a win-win-win situation.
Wet