Potassium Sulfate Fertilizer

Potassium Sulfate Fertilizer by TPS Plant Foods

Potassium sulfate for plants that adds potassium plus sulfur with no chloride. Clean potassium feeding for fruit, blooms, and sensitive crops.

Use it as a targeted supplement alongside your normal feeding program, following the label rate so you can add the specific nutrition your plants need without complicating the routine.

Made by growers

More than a bottle on a shelf.

  • Talk to real plant people. The team that mixes the formula answers your email.
  • Made in-house, in the USA. Every bottle mixed and filled by us, not a third party.
  • We're growers, not resellers. We use this on our own plants before it ships.
  • Bundle savings only here. Pair any two TPS formulas — free shipping on every order.