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Comfrey Tea. The Best Organic Fertilizer

Modern RootsI have a lot of comfrey... I planted a lot of it and am glad I did! My sister, Annie is the knowledge keeper of anything rare, garden interesting, or just plain weird. I was telling her about all my comfrey and she told me NOT to waste it. Meaning, use it as fertilizer. It is rivaled to be the BEST fertilizer there is. If you are anything like me, I want to know why? What makes it so great? 

Russian Comfrey

It's hard to find a fertilizer with natural potassium. Enter----> comfrey. It's full of potassium (3 times that the amount in organic manure), an essential for veggies and other plants to grow and fruit to their full potential. Comfrey is also high in calcium, nitrogen, phosphorous, & potash. The perfect mix for fertilizing your garden organically! 

I have Russian Comfrey, Bocking 14. This is a sterile plant. It doesn't re-seed itself. Thank goodness! At the rate this stuff grows, I can certainly see how it could get out of control if it did re-seed itself. It is also one of the most potent comfrey plants in medicinal terms, which is why I grow it- to make healing salves. Who know it healed plants too!

First, I made comfrey tea. This is how:

Comfrey Tea Comfrey Bucket

Fill a five gallon bucket with comfrey leaves. Pack it tight. Then add water to cover the leaves. If you ferment anything, same concept (without the sugar). Place a lid on the bucket or piece of wood. I prefer the wood piece because I hate trying to get those tight lids off without spilling. Leave outside, in the sun for a week +. It creates this slimy, sludgy, bubbly green tea. Use this as a liquid fertilizer. 1/2 cup will make all the difference in the world for new and old plants :) You can dilute as well if you don't want it as potent.

Placing Comfrey on Bed 2

The second use of my comfrey: Take the leaves and mulch all my raised beds with it. After pulling out veggie plants for the season and weeding, I placed the long, beautiful, elephant sized leaves in 5 of my 4 by 10 raised garden beds. This will act as a fertilizer for next spring and as a mulch as I laid it pretty thick. I then placed my tomato cages over the top so the wind didn't rip off some of the newly placed leaves (it was windy that day).

There you have it! Your own organic, natural, potent fertilizer. And look, you re-cycled/re-used something :) Head over to for more gardening, homesteading, & canning mayhem!

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3/24/2014 2:26:13 AM

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meg withm
12/13/2013 10:56:15 PM

Hi Thermop57 Yes, tea in the gardening sense for plants (organic fertilizer). The comfrey plant that I grow is like a hosta (except different in qualities) - it comes back every year, getting bigger each year and then you can subdivide it. Meaning sterile, it doesn't spread seed everywhere creating mass chaos in the garden or other areas you may not want it. I will have root cuttings this spring/summer and I post those on my country store at I also have a product on there that you may be interested in since you have leg cramps. I have a couple customers that use my 'magnesium balm' for that and restless leg. Magnesium is an amazing mineral and I use it in a balm that you can rub on your legs for absorption. Meg

12/11/2013 2:35:24 PM

Meg, Liked the article but as I'm a Noob to the organic/intense gardening venues, there were, from my point of view, HUGE gaps in 'how to' and in understanding some of the nomenclature; it threw me for a loop. 'Tea' means something I can pour into a cup and drink!......The comfrey issue got my attention because of the potassium: I'm physically impaired and deal with severe Charlie Horses (toxo nervous system issues, amongst others), so a potassium infusion in the form of a cup of tea that wouldn't hurt my guts, interested me.......I'm a writer and so understand the space constraints imposed by editors and publishers, so if the short cuts were part of that, forgive my queries and points.....but I still need to know how to make drinkable tea from the plants you grow, how to get new seed each year since they don't re-seed (or if I need another strain), and if they dry well for storage purposes (medicinal quality, including teas). Thank you for your time and effort.

10/2/2013 8:29:16 PM

Meg, nice. Comfrey fertilizer. Green slimy tea, huh. What self respecting plant wouldn't like that? :0) My wondering mind wonders where the comfrey gets the potassium from? Does the plant mine it out of the ground with deep down roots or snatch it out of the air with wide leaves? No matter potassium is indeed a good fertilizer addition to the soil. I better maybe think about growing some myself. Have a great comfrey green tea day.