‘You are freed from all cares brothers and sisters! All worries! All need to toil and labour for the baron’s taxes, in the guild’s fields and for the peddler’s wares! All the drink you could ever need!’
Final words of an extremely drunk hedge conjurer by name of Oates Greenlock.
"A demonic plant? Don't be daft, go research something useful to society."
"But-but the p-plant! It's evil! It must be destroyed!"
"Now the flowers bloom all year round thanks to the most holy Spirit of Urban flora. It just takes a little blood."
A desolate region is almost entirely without normal vegetation. Local plants are able to unroot themselves and crawl along the ground in search of water and fertile soil. The inhabitants fence their crops in to keep them from wandering off and put heavy stone thresholds in the doorways of their huts to keep wayward plants out.
The plants sense by chemical cues, lacking sight or hearing, and tend to avoid herbivores or anything that smells of "dead plants". Characters with horses are likely to be unwelcome among the locals.