Boron Deficiency in Gerbera

The first symptoms of boron deficiency occur on the flowers, which are distorted and carry fewer petals. Pollen production is restricted and stigmas absent or poorly developed. Flowering stalks are short and may split.

Only expect leaf symptoms after you see symptoms on flowers and when the boron deficiency is more severe. Some chlorosis may occur and red/violet spots develop near the margin and tips of older leaves. Newer leaves are:

  • Distorted
  • Often cupped
  • Wrinkled
  • Much thicker than healthy leaves

Soil Application (Suggested rates of application)

  Granubor Fertibor
LBS/ACRE 3-13 3-13
KG/HA 3.38 - 14.63 3.38 - 14.63

Foliar Application (Suggested rates of application)

KG/HA 2.25 - 2.25
Value in Use
Current Yield (Per Acre)
Expected Sale Price

U.S. Borax, part of Rio Tinto, is a global leader in the supply and science of borates—naturally-occurring minerals containing boron and other elements. We are 1,000 people serving 650 customers with more than 1,800 delivery locations globally. We supply around 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles northeast of Los Angeles. Learn more about Rio Tinto.

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