Leggy Hardy Geranium

I think these can be cut back quite hard when they're finished, they can also be divided up and replanted for more free plants. Cutting back hard should hopefully lead to more new growth from the bottom.

I always cut them hard back with shears after they've flowered, then you get a new set of leaves quite quickly and may be lucky enough to get a second flush of flowers.

Several things.
Any plant will reach higher if its ground is too rich and/or it does not have enough light. . . . .
Chances are your flowers will be poorer if you leave your plant alone. Get out your sheers and chop them NOW before the summer starts - they will thank you for it. Then, in future, always give your geraniums a shallow trim with the shears immediately after flowering. This will encourage more blooms in just a few weeks. In early November chop them to the ground hard and let them rest.

Check out my own blog on hacking. Then there's always my gardening forums......

Thanks very much for your replies. In fact all 6 plants were cut back a bit last year after flowering - they were still flowering well in September! and then cut back hard in November. All the plants are the same despite 3 being in partial shade and 3 in full sun. The soil is probably quite rich as when we moved into the house, the garden had not been touched for years so it had a really good dig and then loads of lava coral (its very heavy clay) and compost dug into it. Hey ho. I think I'll just cut them all back a bit now (even though they are still floweing well albeit if they are are bit flattened by all the recent heavy rain) and see if I can promote some healthy lower growth.