Zulehan-Ging sub-zones opened up too early?

[Ionizer]

Just when reaching 26 I saw

Flower Pots is labeled "27+"
Halucinogenic Gardens "28+"

Both open up. Could even kill things there. Xtreme XP.

Decided to go to the Marshes first not to miss anything.

Couple of kills later both Flower Pots and Halucionogenic Gardens were gone again.

[Mad Merlin]

Were you wearing items that grant bravery? For each point of bravery, you can venture 1 level higher than your actual level.