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Customer – Grower Agreements and Patented Plants List

Below please find copies of the Customer – Grower Agreements between Proven Winners North America and our customers for plants sold by Four Star Greenhouse, Pleasant View Gardens, Nordic Nurseries, and Sobkowich Greenhouses.  There are separate versions of these agreements for the U.S. and Canada.  A French language version of the Canada agreement is also provided below.

Additionally, below please find Exhibits which list the plant varieties sold by Proven Winners North America by these same companies that are patented, PPAF, PBR granted, or PBRAF.

The Customer – Grower Agreements pertain to Proven Winners and Proven Selections plant varieties shipped or delivered by Proven Winners and the above companies to, or on behalf of our customers, including but not limited to the varieties listed in the Exhibits.

If you have questions, please contact Royalty Administration International at (800) 472-4724 or at

Agreements provided by Spring Meadow Nursery (Proven Winners ColorChoice Flowering Shrubs), Walters Gardens (Proven Winners Perennials), and Classic Caladiums (Heart to Heart Caladiums and Be My Calla) may be different.  Please refer to the specific agreements provided by those companies.


  1. The U.S. Customer – Grower Agreement.
  2. Exhibit A – French version for Canada (goes with #3).
  3. The French Customer – Grower Agreement for Canada.
  4. Exhibit A – English version (goes with #1 and #5 – works with both the English U.S. and Canadian Agreements).
  5. The Canadian Customer – Grower Agreement.
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Showing 201 - 250 of 1,294.
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