The game Strange Horticulture is quite short- about 5 hours. The plant identifying puzzles are marred by interface/mechanical issues, especially as you progress through the game and collect more and more plants and pages in your plant guide.
Who is the man you visit in Strange Horticulture?
A note from someone telling you about a man you should visit in Ravenglass (J6). He gives you a recipe for an elixir and clues to reach this monastery. Brew the elixir first, using Storian, Thum (Toom), and Twilight Lepiota. Follow the clues backwards and you should end up by the woods near Torver. The monastery is at I12.