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Washington

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Poa pratensis L. Kentucky bluegrass · Agricultural · bred by Jonathan Green and Sons, Inc. and Cascade International Seed Company

also searched as: вашингтон

Variety description

10 August 2026

The variety forms a dense, thick stand and is characterized by high seed germination energy. It possesses the ability for rapid spring recovery and is distinguished by a rich dark green color, which is maintained even with reduced fertilizer levels.

The plant possesses high stress tolerance, including tolerance to summer drought, and exhibits resistance to leaf spot and summer patch. The variety «Washington II» is characterized by increased shoot density, resistance to snow mold, and necrotic ring spot.

Sources4
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Countries of admission

4 jurisdictions

Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.

QM QZ

active no record

Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.

Variety in registries Regions of admission, rights holders, and status of plant breeders' rights

Parties

Applicant
Jonathan Green and Sons, Inc. and Cascade International Seed Company 5 Submitted the application to the register
Rights holder
Jonathan Green and Sons, Inc. and Cascade International Seed Company 5 Holds the rights to the variety
Maintainer
Seed INC 2 Responsible for variety maintenance

Admission to trade

The variety is listed in the national registry — its seeds are authorized for sale in this country.

  • QZ European Union Active

    № 306520

    Registration
    4 April 2025
  • IT Italy Active

    № 005399_A 005399

    Application
    12 July 1996
  • PL Poland Active

    № R R14627

    Application
    28 December 2020
    Registration
    4 April 2025
  • PL Poland Active

    № R R15417

    Application
    13 January 2022
    Registration
    4 April 2025

Plant breeders' rights

The right is granted for a limited term: propagation of the variety requires a license from the rights holder.

United States of America № 9100264
Protection expired
  1. Application filed 18 September 1991
  2. Registered 28 May 1993
  3. Entry closed 28 May 2011

Records are sourced from official registry publications. Data sources and legal status

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This is a directory, not an official registry: data is based on public disclosures and may have changed. More about sources

Same species

Other varieties: Kentucky bluegrass

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Poa pratensis L. · Kentucky bluegrass

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Poa pratensis L. · Kentucky bluegrass

Rutgers, the State University of New Jersey and Mountain View Seeds, Ltd.

CZ ES
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Poa pratensis L. · Kentucky bluegrass

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Poa pratensis L. · Kentucky bluegrass

Pieter den Haan

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Poa pratensis L. · Kentucky bluegrass

SIMON| Prof. Dr. Uwe Simon Lehrstuhl fuer Gruenlandlehre der TU Muenchen

DE
2 records

Poa pratensis L. · Kentucky bluegrass

Rutgers, The State University of New Jersey

IT
4 records

Nearby in the species list Venta DS, Veracity, Vetrovska, Vilm, Vilor, Viola, Virginia, Volt, Waikiki, Waro, Waterworks, Welcome, Wembley, Wild Horse, Xiamara, Ximena, Yankee, Yellowstone, Yvette, Zavina

Discussion: Washington

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