ReTain® Plant Growth Regulator for California Soluble Powder

PGRs and Protectants

ReTain® Plant Growth Regulator for California Soluble Powder increases nut and fruit set in almonds, walnuts and cherries to help ensure an optimum crop load potential. The naturally occurring active ingredient in ReTain works by reducing ethylene production in blooms thus delaying flower and stigmatic senescence. This effect results in flowers being viable longer, which allows more time for pollination to occur.

In addition, ReTain consistently increases nut set in walnut orchards that suffer from low nut set due to Pistillate Flower Abscission (PFA).

Product Benefits

  • Extends Pollination Period
  • Improves Crop Load Potential
  • Proven Technology for Fruit and Nut Set
  • For Walnuts, Increases Yield in PFA-sensitive Walnut Varieties
  • For Stone Fruit, Improved Fruit Quality and Harvest Management

Key Problems/Uses

Increases Nut/Fruit Set


The ReTain® Plant Growth Regulator for California Soluble Powder Tree Nut Program offers growers the opportunity to earn rewards for applying ReTain to almonds and walnuts.

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