The Montreal Botanical Garden is truly a clean, well organized, and beautiful place.
Overly signs are clear, parking is practical(not free) and easy access from the metro station. With a short walking distance. Due to a short spring/summer period that Montreal has, the gardens are not open for long. Yet throughout the year, they will have many beautiful things to see indoors.
One setback from all this? The rates! They differer from children to senior, or from Quebec resident to non-residents. Having said this. A family of four with their regular rates, will be spending around $100. Do I think it's worth the high cost? Absolutely! Yet, if you are a family. Do keep in mind that prices at the Botanical Garden do add up, quickly.