Assertion: comfrey | /r/HasProperty | cultivated
Facets:
Source sentences:
text: Comfrey is native to Europe and Asia, but has been cultivated in (and subsequently escaped from) much of the temperate world.
text: Comfrey (Symphytum spp.) has been cultivated and valued by many cultures for almost 2500 years.
text: While comfrey is best planted in spring, it can be cultivated as long as the ground is not frozen.