Gardens should be approached on our knees. So we don't miss things like this:
|Flower unfolding from its bud|
|Comes in blue and lilac, with pin-stripes|
I've forgotten what plant this was; it got transplanted by mistake with a batch of primulas. Once the flowers are completely open, I may remember.
UPDATE: It's a Himalayan Blue Poppy, Meconopsis baileyi.