Wow, they have a lot of hardies there this year. When i went there several years back it was later in the season and the lotus were past their prime but their dried seedpods were very impressive. At the time I had no idea that was what I was looking at but it was cool. I remember seeing lots of blues and purples water lillies. Maybe they change their stock or add the tropicals a little later?
Wish I could go there again, I really enjoyed their Japanese water garden it was so peaceful that I forgot that it was in the middle of the city until I saw just the top part of a building nearby.