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Blossom End Rot

Blossom End Rot, sometimes simply labelled calcium deficiency, is a common yet easily curable issue in the garden. If you have noticed the blossom end of your tomatoes, peppers, melons or eggplants discoloring and rotting, then Blossom End Rot caused by a deficiency in calcium is the culprit. Calcium deficiency can occur for a number of reasons, but over-fertilizing and low-pH soil are the two most common. Lockup of key nutrients can also occur in specific growing mediums. Most notably, unbuffered coco coir may lock up calcium and magnesium while releasing potassium and sodium. This forces the grower into supplementing and accounting for those nutrients.

How To Prevent & Control Blossom End Rot:

  • Maintain soil pH above 6.5.
  • Limit fertilizer inputs.
  • Amend soil media prior to planting.
  • Use organic mulch to maintain soil moisture .
  • Supplement calcium sources when symptoms are present.

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