Question
I need to know when and how to root cuttings from the Magnolia(Southern)

Answer
Cuttings can be taken at any time of the year, as long as there is foliage on the plant.

Simply cut a tender shoot that is at least six inches long. Avoid growth that has turned woody. Remove the lower sets of leaves. Dip the cutting in a rooting compound. This product can be purchased at most garden centers. Stick the cutting one inch into a good potting mix. Be sure to thoroughly wet the soil prior to planting.

Finally, cover the pot with a clear piece of lightweight plastic. Place the pot in indirect sunlight on an east window seal or under fluorescent lighting.    

After two weeks, check to see if the plant has rooted by slightly pulling on the stem. If you feel resistance, remove the plastic covering and be sure to keep the soil moist. The plant should then be treated as any other seedling.      

I hope this helps. Please write again if I can ever be of assistance.      

Regards,        

Mike