How Do You Use "Epsom Salts" On Orange Trees - Knowledgebase Question

Surprise, AZ
Question by hwslone
January 27, 2002
How do you mix "epsom salts "for use on orange tree?

Answer from NGA
January 27, 2002


Epsom salt (magnesium sulphate) is used as a source of magnesium and if applied, is used as a side-dressing or foliar spray as needed during the growing season. Certain crops, including peppers, tomatoes and roses, sometimes benefit from the additional magnesium. Rarely is there a deficiency in soils that would require the supplementing of this nutrient and, if you're using other complete fertilizers, you're already adding magnesium and sulfur.
Unless you have had a soil test done showing this deficiency or your foliage has signs of it, it's seldom applied to citrus. Citrus is however a heavy user of nitrogen, which should be applied 3 times per year, each application containing one-third of the tree's annual requirement.

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