Juniper: Magnesium deficiency

categories: Conifers Juniper Juniper Diseases Ornamentals

revision date: 2023-02-07 12:00


Magnesium (Mg) deficiency is a result of improper nutrition. A juniper lacking sufficient magnesium develops yellowing or dead foliage in the center and grows slowly. Older tissues are affected first. Magnesium deficiency may resemble damage caused by Phomopsis twig blight.

Management Options

Use Integrated Pest Management (IPM) for successful plant problem management.

Non-chemical Management

Select non-chemical management options as your first choice!

  • Apply Epsom salts (magnesium sulfate) either to the soil (1 cup per 100 square feet) or as a foliar fertilizer (5 ounces per gallon of water).
  • Switch to a fertilizer containing magnesium.
  • Addition of dolomite lime to the soil may help, but is not an immediate solution.

Chemical Management

IMPORTANT: Visit Home and Garden Fact Sheets for more information on using pesticides.

  • None recommended