I spent the afternoon at Kew Gardens - looking mostly at the grasses, but trying to see other parts as well. The gardens are massive! It will probably take me several visits before I am able to see all of the grounds.
Although it was a bit cold and I was a tad underprepared, it was still a very enjoyable outing.
Now if you are as ambitious as I was in posting all of these - you can view the next set of pictures, all grasses...(okay, I am posting these tomorrow, due to the time required to resize and label them. And I want to go to bed!)