I think you are fine. This is getting late in the blooming season for my zone and probably yours as well. During the last week, I saw the last bloom of a Kanjiro and the week before that was the last blooms of a White by the Gate & a Debutante. Late bloomers in Zone 6 will probably be blooming there now though.

I do not measure how long blooms have been open but maybe 1-2 weeks per bloom? Temperatures that go up/down a lot or periods of moisture followed by dry soil can also cause bud drop, where the buds fall unopened. The blooms will stay open for a while but not as long as they would in a hydrangea for example, so I would expect them to eventually fall. So evenly moist, well mulched soil will help and so will temperaures that do not wildly fluctuate (but you have no control about that of course). Try to maintain 3-4" of mulch up to the drip line.

Make a note in a wall calendar that gives you an idea of when the plant bloomed on prior years so you get a feel of how it is doing. Do not be surprised if it blooms ealier or later in some years though. I just had all camellias here start blooming very late compared to prior years. Well timed cold snaps by Mother Nature appear to be the cause of my late bloomage.

Luis

This post was edited by luis_pr on Tue, Apr 16, 13 at 12:02

Thank you!