Penang tropical garden is around 15 km from the butterfly garden. We took a chartered car to go there from the 101 Rapid Penang bus stop in Teluk Bahang. I wasn't excited about going because I knew almost all of tropical fruit plants but we had nothing to do that day.
The farm was small. The entrance fee was quite high (10$ or around Rp 100.000) At least it had various tropical fruit plants that we had never seen in my life.
We were able to eat the freshly picked exotic fruits and the all you can eat fruits buffet too. So it was all worthed.