Q. Can I use epsom salts when growing tomatoes?

Answer

You can certainly use Epsom salts when growing tomatoes but whether it helps is a different matter!

The commonly touted use of Epsom salts as a fertilizer is a bit of a gardening myth. Epson salts is actually magnesium sulfate. If your soil is deficient in magnesium or sulfur then adding Epsom salts may help to overcome this problem. On the other hand, most garden soil is not magnesium deficient, particularly if you use compost frequently. Yellowing of leaves is a sign of magnesium deficiency but it is best to have the soil tested before using Epsom salts.

The product can be added directly to the soil or used as a foliar spray. Sulfur deficiency is best treated with horticultural sulfur (flowers of sulfur).

Contact Cornell Cooperative Extension Service of Westchester County for more help on soil testing. Agent Gerry is available before 12 noon on weekdays, at 914 285-4620 or visit their Horticultural Diagnostic Service web page for forms and information.

Courtesy of NYBG Plant Information Service

  • Last Updated Apr 02, 2018
  • Views 40
  • Answered By Anita Finkle

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