I really wanted to like this place. I read a lot about it and it was recommended to me by a lot of friends. but i was really disappointed.
the entrance fee is $7 and that's a pretty penny for this garden.
the coy fish ponds are nice, and there are some really interesting trees, but the place is rather small and you can walk through it in less than 15 minutes without seeing anything too impressive. the part that really got me was the $3 cup of tea that was about 1/4 of a cup.... i felt really scammed after that.
if you want to come here, I'd say visit during the free hours (mon/wed from 9-10AM, I believe but double check) so you dont feel disappointed....