Found this formula from House Of Strauss in the UK, web site has been gone for quite some time now.
Spread an ounce ( 7 Grams ) of ammonium sulfate on the cut surface of the roots in the ground. In about 4 weeks, the chemical becomes sulphate of ammonia. Can be used to kill swarms of small comfrey plants.
Stir 1 pound ( 455 Grams ) of the white crystals into a gallon ( 4.5 Liters ) of water and apply with a rosed watering can over a 10 foot ( 3 Meter ) area. In 8 weeks, any crop can be sown or planted after it.
The address of the Comfrey Area Library is: 306 Brown Street West, Comfrey, 56019 1023
Comfrey in Tamil is called "பன்னீர் கீரை" (Panneer Keerai).
Comfrey leaves are called "लाख घास" (lakh ghaas) in Hindi.
The phone number of the Comfrey Area Library is: 507-877-6600.
Symphytum officinale, there are about 25 species including prickly comfrey (S. asperum) and Russian comfrey (S. Xuplandicum). A member of the Boraginaceae family.
Comfrey is called "Ewe Awolowo" in Yoruba language.
Comfrey is a liquid organic fertilizer and also an herbal medicine. Comfrey is a turnip like root and has various colors, but most typically cream or purplish.
Comfrey is an herb that has medical values. This herb can be used for soreness and rheumatism.
Symphytum Officinale & caucasicum et peregrinum
The common names of Comfrey (Symphytum officinale) are -bonesetknit bonebruisewortblack wortsalsifywall wortslippery rootgum plantknit back
No, horses should not eat comfrey as it contains toxic compounds that can be harmful to them. Consumption of comfrey can lead to liver damage and other health problems in horses. It's best to avoid feeding comfrey to horses and opt for safer forage options.
I have done an extensive search and found no listings for comfrey oil. The leaves and the roots are the parts most commonly used. Comfrey is used to treat wounds, cuts, abrasions and skin disorders as it simulates cell growth.