How to Use Azalea Fertilizer on Magnolia Trees


Magnolia is a genus of flowering plants with more than 1,000 cultivars. The southern magnolia (Magnolia grandiflora) is one of the more commonly grown varieties in the United States. Growing to 90 feet tall, the southern magnolia has large green leaves and striking white flowers. Magnolia trees are easy to grow and require full sun and acid soil. If you grow azaleas, you can fertilize them and a magnolia at the same time, with the same azalea fertilizer. Apply the fertilizer when the soil is dry, in early spring.

Step 1

Rake the soil around the magnolia tree and bag up the debris.

Step 2

Pour the fertilizer into a broadcast spreader, at the rate suggested on the package for the size of your tree.

Step 3

Apply the fertilizer beginning at the outer two-thirds of the distance from the trunk to the dripline. Determine the radius of the widest part of the tree. Spread the fertilizer 50 percent of that measurement beyond the dripline.

Step 4

Water the application area if no rain is expected.

Tips and Warnings

  • Do not apply fertilizer within 12 inches of the trunk of small trees or 18 inches from the trunk in large trees.

Things You'll Need

  • Rake
  • Large bag
  • Broadcast spreader


  • Magnolia Society International: Magnolia Cultivars Checklist
  • University of Tennessee Agricultural Extension Service: Fertilizing Landscape Trees
  • “Soil Fertility and Fertilizers”; Samuel L. Tisdale, Werner L. Nelson, James D. Beaton, John L. Havlin; 1993
Keywords: fertilize magnolia tree, use azalea fertilizer, acid fertilizer magnolia

About this Author

Victoria Hunter has been a freelance writer since 2005, providing writing services to small businesses and large corporations worldwide. She writes for, GardenGuides and ProFlowers, among others. Hunter holds a Bachelor of Arts in English.