The Uses of Gibberellic Acid


Gibberellic acid, also called GA-3, is a natural compound used to promote better growth, flowering and fruiting in plants.

What Is Gibberellic Acid?

Gibberellic acid is a plant growth regulator derived from a fungus, Gibberella fujikurdi. Plant pathologists in Japan discovered the fungus in the late 1800s, when it caused rice seedlings to grow too tall and thin, resulting in the death of the seedlings.

How Is Gibberellic Acid Made?

Gibberellic acid is derived from Gibberella fungi grown in large vats. It is sold as a powder, which is mixed with water to make a solution.

Uses For Gibberellic Acid

Gibberellic acid is most commonly used in the home garden to improve germination of seeds, especially those that require a cold period or stratification. It is also used to promote flowering, increase fruit set and increase size of fruit.

Is Gibberellic Acid Organic?

Gibberellic acid occurs naturally in plants and regulates plant growth. Only a few micrograms of the compound is absorbed by seeds, where it helps them grow. It does not remain in the plant. Most organizations for certified organic foods approve the use of gibberellic acid.


Do not get gibberellic acid in your eyes, or on your skin or clothes. Use rubber gloves or wash hands thoroughly after use. Wash implements with vinegar and rinse well. Dispose of toweling and filtering materials, as well as any remaining solution, according to local, state and federal laws.


  • California Rare Fruit Growers
  • J. Hudson Seeds
Keywords: plant growth regulator, GA-3, uses for gibberillic acid

About this Author

Melody Lee began working as a reporter and copywriter for the "Jasper News" in 2004 and was promoted to editor in 2005. She also edits magazine articles and books. Lee holds a degree in landscape design, is a Florida Master Gardener, and has more than 25 years of gardening experience.