There's signs around explaining what some of the plants are plus there are usually some employees a nearby if you have a tougher question. They don't do formal tours though.
It free, and you can tour at your own pace,, don't forget your camera
It's free and worth the time to exploring. They usually have pamphlets at the entrance.
It's free to get in. It's small as well. Don't knowow of any guided tours.
There is no admission charge. I'm uncertain about guided tours. The area is small however and easily explored.
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