Assertion: comfrey's nutrient | /r/HasProperty | potassium
Facets:
Source sentences:
text: Comfrey is known to be a nutrient accumulator, reaching its roots deep into the ground to mine the subsoil for nutrients (potassium, phosphorus, calcium, and more).
text: The resulting liquid has an undesirable strong odor, but is extremely effective at replenishing nutrients —especially potassium – in plants.