Maybe I should have asked this before I did it! But ...
By Jan65
North East England,
United Kingdom 
... I've given two small hypericums a haircut. They are in my rockery and have all but finished flowering, with no other discernible buds. The dead heads looked awful, so I have trimmed everything off - see the before (left) and after (right) photos below of one of them. Please someone tell me I've done the right thing!
25 Jul, 2009
Answers
Thank goodness for that, thanks Bamboo! They do look a lot better don't they?
25 Jul, 2009
Wont harm them one bit
26 Jul, 2009
Thanks for the reminder Jan, mine need their annual haircut too.
26 Jul, 2009
Definitely need to remove the seed heads or you end up with millions of the dratted things all over the garden.
26 Jul, 2009
Lord yes we were away one year and the following spring...
26 Jul, 2009
Thank you all for your responses. I was worried that I seemed to be doing more than just deadheading, but it just seemed the right thing to do. Thanks for the reassurances.
27 Jul, 2009
I would normally shear them over to get rid of the spent flowerheads - should be fine and it looks so much better!
25 Jul, 2009