Un-baled

This family of Himalayan Birches started as perky offshoots from a large parent tree which I grew on the balcony of a fourteenth floor condominium (- the compromises one makes for love! - sigh -).
I have just removed it from its straw bed and exposed it to the full glories of spring - deciding if it isn't the time to free the rather mature trees from their self-imposed bondage - why they chose to grow so well in a pot in such a weird micro-climate I will never know.