Q.proper magnolia tree watering
What is the proper watering cycle for magnolia trees?

Certified GKH Gardening Expert
Once they are established, magnolias typically do not need to be watered unless you are experiencing drought conditions. Right now, much of the country is experiencing drought conditions, so you may need to water.
If this is the case, once a week is good. The water should be done so that it covers from the trunk all the way out to about a foot or so beyond the edge of the tree's canopy. 2-4 inches of water should be put down at each watering.
Watering is best done in the early morning or early evening.