Begonia - no known locations
Chinese Chomping Cabbage - no known locations (you can get this from Astrid's plant of the day)
Daffodil / Ashpodel - no known locations
Fanged Geranium (you can also get this from Astrid's plant of the day)
Hydrangea - no known locations
Mandrake - no known locations (you can get this from Astrid's plant of the day)
Mayflower - no known locations
Mimbulus Mimbletonia - no known locations
Peony - no known locations
Puffapod (you can also get this from Astrid's plant of the day)