What do I do with my lemon eucalyptus?

What do I do with my lemon eucalyptus?

Hi guys, I have a tiny bit of a problem regarding how I should deal with my lemon eucalyptus.

I live in a flat/apartment. That means a severe lack of space. My lemon eucalyptus has grown so tall on the ledge I placed it at that I don’t know what to do with it now. Its tips are touching the ceiling; problem is I have absolutely no more space to shift it around with.

Should I prune it? Will pruning stunt the growth after that?

Someone suggests that I should bonsai it. But I’m not sure if it’d take to bonsai-ing after almost a year of unchecked growth.

For reference, two pictures:

What do I do with my lemon eucalyptus?

What do I do with my lemon eucalyptus?

tree id?

tree id?

Garden pics

Garden pics

My Room

My Room

Terrible happening ~ look what I just found…

Terrible happening ~ look what I just found…

What am I, again?

What am I, again?

Peony Problem

Peony Problem