Organic fertiliser. Porous bag of comfrey stems (Symphytum officinale) in a container of water. The plants are left in water till they decompose. The resulting liquid is rich in potassium (K) and is used as a fertiliser | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Adcock, Maxine |
Taille de l’image : | 3446 px × 5153 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |