It is open from 11 AM- 9 PM.
Buy a combo tickets for 4 attractions:
1. botanical garden, 2. Bio-dome, 3. Insectarium & 4. Planetarium. With this Combo you get 2 times entries to gardens and Insectarium.
Reach there by 10:45 AM, else you wont be able to cover all and have difficulties finding parking. Its huge.
After buying tickets first go to Biodome, Insectarium in 2 hours then keep 3-4 hours for garden its-self.
Food is basic and you will find only one cafeteria in the centre of garden.
Be ready to walk a lot , wear best walking shoes. If rain is expected carry raincoats!
Only enter from either Gardens side or Insectarium, do not park else where. Do not move towards tree house after gardens as there is 20 mins walk to tree house and in between there is nothing to see. Instead after covering other places drive to backside of garden and in 10 mins you can cover tree house.
On the entry they stamp your hand , take care , they check it many times inside :)
Carry water with you!
Garden are open from April till sept end.
Enjoy the beautiful work of art !