Just checked on my national Trust book closed Tues wed and thus open Fri sat sun 1030 till 1700
10.30 till 5pm
Check national trust page also.
Entry is via a timed ticket with the first one at 1030 am and the last one at 4 pm; entry times are every 15 minutes between those times. The property closes at 5 o'clock although I doubt you would be rushed out of the gardens.
Most entry times start with a short introductory talk and then you can walk around at your own pace. However, there are some fully guided tours at 11 am, 1230, 2 and 3 pm (I think).
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