Even though I collect Geraniums and have almost 100 different, 'Splish-Splash' is not good enough for my garden. It is loose in its growing, the flowers seldom lives up to the expectations, and I find it generely not garden-worthig. Because its a pratense it is also prone to get what we is called meldugg (don't remember the English word).
There are so many beautiful cranesbills so find another to have in your garden, is my advice.

Thanks for advise! What would be a good Geranium to replace it with?
P.S. meldugg...is the word you mean 'leggy'??
CMK

I agree with ann, my splish splash was slop splatt actually, dull as ditch water. You could try moving it to sunnier climbs and see if the color improves but, I have not seen ONE in bloom that looks like the pictures. Too bad really, because it seems to be a very eager grower, yes, perhaps a little leggy, ... meldugg, hmmm, please advise the meaning for this wonderful word, Ann.
Thanks. Kat

Well I really love mine and am very happy with it other than the fact that only one of the three I planted last year survived. Mine is in full sun. When it first bloomed it was pretty white but as the flowers have aged they have gotten the blue splashes in them. They are planted in front of my Hollywood which looks a little washed out from the bright sun. I love perennial geraniums.
Bonny

I believe meldugg is mildew.