Comfrey is rich in potassium (K), which is required for fruit production, and also contains potash (P) and nitrogen (N). A liquid comfrey feed has a higher NPK ratio than farmyard manure. Comfrey is also one of the few plants to contain vitamin B12, so it’s a rich source of food for plants.
The black tub at the bottom receives the black gold!
Wear gloves when you pick comfrey, because the hairs can irritate. A mature plant can be harvested four to six times a year, from spring to autumn. Once harvested put the comfrey leaves & stems into the barrel.
Cover with a lid so the weights can softly compress the comfrey.
Finally a lid on the top to prevent rainwater getting in.
To use your comfrey tea, you’ll need to dilute it to approximately 1:20. (So approx 50ml per litre)
A standard 10-litre watering can, that’s about a half a litre of concentrate.
You can then use the feed on your fruit bushes, fruit trees, courgettes, squashes, tomatoes, cucumbers etc. to aid with fruit set and development, or on your flowering plants to boost their blooms.