Land unfit for gathering medicines

Medicines are not to be gathered from temple grounds, haunts of ghosts such as cremation grounds, extremely cold, hot or snowy places, waterlogged, waterless or misshapen land, barren dry land with stunted shrubs, mountains with deep dark caves, foul-smelling or very sandy ground, or soil that is blue, white, very red, ash-coloured, cloud-coloured or pigeon-grey; plants grown in such places are not acceptable.