How to make Comfrey liquid fertilizer

[@mikeharrington5593]

Are we missing a trick with comfrey tea (or compost tea from other plants decomposed by anaerobic digestion)? My point is that the resulting "compost tea" must be diluted to a 1:10 ratio because using at 1:1 is likely to be too strong & kill the plants being treated. Therefore, is it not possible to use the 1:1 ratio as a weedkiller in several treatments to remove unwanted plants ? Has anyone tried this idea intentionally, or by accident, or have there been any botanical studies of this idea to determine whether it could be an effective application on a general range of weeds, or unwanted grasses? (However, I suspect that the toughest, deepest rooted grasses would be impervious).

[@peteonthemove]

That's an interesting point Mike. I'm not aware of any studies but I will have a look.