Can I keep my robinea small?

I bought a Robinea pseudoacacia "frisia" and with the intention of shaping it as a small mop head but having read more about it I am a little concerned and think perhaps I should remove it.

Has anyone kept theirs small , my garden is 30 meters sq perhaps 35 and bought it as I love the lime colours , but think overestimated how small I can keep it.

If I do change it can you recommend something that is has bright foliage and will suit the size of my garden.

Thanks

 

It will probably die soon anyway, frisia is prone to vascular wilt and dozens are sucumbing to it. Personally id get rid.

 

Have a read through this H-M....Seems trouble is a foot..
http://www.wwww.rhs.org.uk/advice/profiles0708/robinia.asp

 

Thanks for the replies , but it is at the mo very healthy , if there was no risk of a disease could I keep the tree mop head shaped and compact?

 

I have had a Robinia for about 15 years and it is a lovely tree but this year about a third of the branches have died, is this vascular wilt?