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Penn A-4

Active

Agrostis stolonifera L. Creeping bentgrass · Agricultural · bred by TEE-2-GREEN CORP

also searched as: пенн а 4

Variety description

10 August 2026

The variety has a dark green color and forms a dense, uniform stand. Due to its aggressive growth habit and active stolon reproduction, the plant recovers quickly from damage and effectively competes with weeds such as Poa annua.

The plant possesses good resistance to diseases, including dollar spot, and demonstrates high tolerance to extreme temperatures. It requires regular low mowing and intensive maintenance to prevent excessive shoot accumulation.

The variety was created specifically for golf course conditions, including greens, tees, and fairways. During utilization, it requires a specific fertilizer regimen focused on maintaining high density and quality of the playing surface.

Sources7
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Countries of admission

2 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

terminated 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Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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

Breeder
TEE 2 GREEN CORP. 5 Developed the variety
Applicant
TEE 2 GREEN CORP. 5 Submitted the application to the register
Maintainer
Tee-2-Green Corporation 8 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 Terminated

    № 201067

    Registration
    31 March 2000
    Terminated
    26 February 2021
  • IT Italy Terminated

    № 005976_A 005976

    Application
    10 July 1997
    Registration
    29 February 2000
    Terminated
    26 February 2021

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 № 9700060
Active
  1. Application filed 19 December 1996
  2. Registered 22 November 2004
  3. Currently active indefinite in the register

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

Found an error in the record?

The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.

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: Creeping bentgrass

All 121 varieties of species

Cy-2

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Agrostis stolonifera L. · Creeping bentgrass

KATO MASAHIRO|Umemoto Seisaku|AOKI KOICHI|SHINGYOJI TAKASHI|Kubo Chikako|Yokoyama Tomoko|Kondo Satoshi|Takayama Mitsuo|Tachibana Tadashi|Takashima Keiji|Iriyama Yoshihisa|Yatsu Hideki

CZ DE
8 records

L-93

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Agrostis stolonifera L. · Creeping bentgrass

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Tour Pro

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Agrostis stolonifera L. · Creeping bentgrass

SEMILLAS FITO SAU

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8 records

Pc2

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Agrostis stolonifera L. · Creeping bentgrass

PURE SEED TESTING

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4 records

Penn A-1

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Agrostis stolonifera L. · Creeping bentgrass

Tee-2-Green Corporation

DE IT
8 records

Penn G-1

Active

Agrostis stolonifera L. · Creeping bentgrass

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IT
3 records

Nearby in the species list MV Soakley, MVS-AP-101, Nightlife, Nordlys, Oakley, Oakley MTV1, Oasis, Pala, Pc2, Penn A-1, Penn G-1, Penn G-2, Penn G-6, Penn G-Two, Penncross, Penneagle, Penneagle II, Pennliks II, Pennlinks, PennLinks II

Discussion: Penn A-4

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Growing experience and notes on the entry. Comments are not part of the reference data and are not verified against primary sources.

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