Bleeding Hearts query

My Bleeding Hearts leaves have started to go yellow around the bottom of the plant, although it is still producing new shoots. Any idea what i am doing wrong? my mum suggested that maybe i am giving it too much water.

Anyone ideas guys?

 

It is the natural character of the bleeding heart to die down after flowering in the spring, so I think this is nothing to worry about. They will reappear next spring. M-L