What leaves are safe for shrimp ?

[Ingrid]

What leaves are safe for shrimp and how should they be prepared for adding to a tank ?

 

[FishGuest5123]

I’ve heard any leaf that doesn’t have white milky looking stuff coming out. I know Oak trees are safe.

 

[Essjay]

The leaves should be dead - ie fallen off the tree in autumn - and collected from an area where no pesticides or fertilisers etc have been used.