It’s sterile so it doesn’t spread. Which means you can let the flowers run to seed (better for the pollinators) and not have to spend time controlling it.
Oh ok, so nutritionally speaking it’s all good to use the tons of wild comfrey and nettles at my disposal? Comfrey is the no1 thing to pop up all over the shop so no need to plant any until I’ve killed that lot off...
Why is bocking 14 so much better? I’ve seen green manure vids on yt that suggest nettle and wild comfrey just as good...