I've access to a few broomstick thick zelkova's - worth the collection effort?

[Trempie4]

make sure you are not spotted digging there.
Digging plants in the arboretum is frowned upon I hear.

Seeds! But yes I hear you on digging at the Arbo... def. frowned upon...

 

[Mike Westervelt]

Looks like Siberian Elm to me