Close up of purple knodding flowers of comfrey, stupid white dog in distance

Comfrey (Symphytum uplandicum) 'Bocking 14' in full swing

Different techniques for creating comfrey feed

Comfrey is rich in Potassium, and is a fantastic fertiliser for fruiting plants. ‘Bocking 14’ is a sterile cultivar of Russian Comfrey which is very high in nutrients and doesn’t self-seed.

There are 4 ways of using comfrey as a fertiliser (see Garden Organic for more detail).

  1. Chop ‘n’ drop mulch: grow the comfrey near a fruit tree that has high nutrient demands, then a couple of times a year, chop it back and lay it on the ground as a mulch.
  2. Comfrey feed: Stuff a bucket full of comfrey stalks & leaves, weigh down, cover with water. Leave for 4-6 weeks. Absolutely stinks, strain off liquid, put sludge on compost. No need to dilute before applying.
  3. Concentrated comfrey feed: two containers, one with holes in bottom. Weigh comfrey down in container with holes, as it decomposes, thick brown liquid collected by other container. Not so stinky. Dilute 10:1 before applying.
  4. Dry comfrey sprinkle: dry comfrey leaves in a hot, dry place (eg polytunnel). Skrunkle them up to dust, sprinkle them on base of plants. Acts as slow release fertiliser. Doesn’t smell at all. Note: this is experimental, not sure how well it works!!

Thanks to Ellie from Scrumptious Garden for heads-up about concentrated comfrey feed 🙂.