Two years ago a friend gave me half a dozen small blue geranium
clusters, each about 5" tall and the root-cluster about 1" wide.
Well, they certainly love the acid soil of western Mid Wales. This year
they are all about 2 feet tall and 3 feet wide. The trouble is that
they because of this "bigness" they are all flopping over - they don't
seem able to support themselves, despite having ample water.

Is this normal? Should I be cutting off the tumbling excess? If so,
how close to the ground should I cut?

Any or all advice appreciated.

Thanks,
Ellie.