You need to get the (Ornate Floral Pitcher) and fill it up at the Peka Glade. (http://subeta.net/explore/glade.php)
The Glade is open only during certain hours during the day. I think it was 8 PM-8 AM? I'm not too sure... If you get the pitcher and fill it up, it should turn into a Glade Potion.
The Ornate Floral Pitcher is Super Rare and stocks at the Seedling shop. Dang, I've heard a few people have gotten it from the Wizard Quests though... Lucky them. xD;;
EDIT: Might be better to ask this in the Help forums? I adore the look of the Glade pets, but unfortunately, they don't match the personality or name of any of my pets... :unheart: That's why I don't know too much about it. D:
What Melodious said. :)
But~, the Glade is only open 8-9am and 8-9pm, as far as I know. If you aren't collecting Achievements (or plan to do so), you can also buy the [Item=Glade Potion]. It's a bit cheaper than the Pitcher, because you get an Achievement for creating a Glade Potion. So, think about it for a while. xD
At the moment the Pitcher is Rare (R80 ?), but sooner or later it will be brought up to R99, as far as I know. O___o