small bushy plant 4 ins diameter

small bushy plant 4 ins diameter

Observation - small bushy plant 4 ins diameter - UK and Ireland. Description: I know this is cheating but!.... This plant was given to me third hand with no identity, I know it is a garden plant but would love to know if it is hardy or not, what it is called and how big it might grow. I was going to put it out in the border but

I know this is cheating but!....

This plant was given to me third hand with no identity, I know it is a garden plant but would love to know if it is hardy or not, what it is called and how big it might grow. I was going to put it out in the border but it started flowering in our kitchen. Any help gratefully received.