Q.DD Blancher Magnolia Tree
Please Help. I purchase Magnolia Tree in June when bought the tree the leaves where green; but after I had it planted by professional landscaper. He advised me to water the every day morning and evening for about 20 minutes. Also I had applied some fertilizer around the base of the touch of tree; now in the last 3 weeks the leaves have fallen and turn yellow- brown. I stop watering the tree after I saw so many leaves fallen off the tree. I do not know what else to do; also I had Palm tree that had die due to the winter storm here in Texas ( February) I replace it with the Magnolia tree. Please help.

Certified GKH Gardening Expert
It may have suffered from fertilizer burn. Usually new trees don't need fertilizer the first year. Also, it needs regular watering, but take care not to oversaturate the soil or leave it too dry either. Here is more about magnolia trees.
http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=249453&=
https://www.gardeningknowhow.com/ornamental/trees/magnolia/southern-magnolia-trees.htm