Really depends are you taking children to see the dinosaurs? About 1 hour. If you are going to see the flowers and take pictures, 2 to 3 hours
Like 2 and 3 average
If you like to take photos and videos I will give myself 4 hours.
I only had two hours and I felt like it was a rush. I'm a plant hobbyist though, and I like to take photos/look at labels etc. If you're only going to stroll thru and take a few photos, 2 hours should be ample.
About 1.5-2 hours.
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