Chương 307: Parent's Duty (3)

Of course, there are Goldthorn weeds growing in places with merely high spiritual energy but there is not much as many plants need to fight for said energy and despite it's name as weed, the Goldthorn weed is fragile when it comes to competition of resources. Not to mention those places are usually guarded by powerful demonic beasts. And due to the bother of having to continuously feed the victim, only when it's offered in a large quantity will people pay a high price for it. Therefore, it's considered a "rare" poison.