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RC Big Rock

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Panicum virgatum L. Switchgrass · Agricultural · bred by Roger Samson

also searched as: рк биг рок

Variety description

10 August 2026

The variety is derived from 'Cave-in-Rock' genetic material and is intended for use as a forage crop, a source of biomass, as well as for soil conservation and wildlife habitat creation. The plant is characterized by a late maturity group, reaching maturity approximately 155 days after planting.

Under favorable conditions, the sward height reaches 2.1–2.7 meters. The variety has an erect growth habit and stems that are approximately 30% thicker than those of comparable varieties, which provides high lodging resistance. The variety's seeds are distinguished by increased weight and size, which facilitates easy establishment, while the plant retains good winter hardiness.

Sources7
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Countries of admission

1 jurisdiction

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.

QZ

no record

Variety registered as early as 2 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified.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
Roger Samson 1 Developed the variety
Applicant
Resource Efficient Agricultural Production (REAP) - Canada 4 Submitted the application to the register
Rights holder
Resource Efficient Agricultural Production (REAP) - Canada 4 Holds the rights to the variety
Maintainer
Resource Efficient Agricultural Production (REAP) - Canada 4 Responsible for variety maintenance

Plant breeders' rights

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

Canada № 20-10084
Application submitted
  1. Application filed 29 January 2020
  2. Registered
  3. Currently active indefinite in the register

More 2 records protections in other jurisdictions are shown on the map above.

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

Found an error in the record?

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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: Switchgrass

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Panicum virgatum L. · Switchgrass

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Panicum virgatum L. · Switchgrass

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Panicum virgatum L. · Switchgrass

Roger Samson^^^Erik Delaquis

3 records

Panicum virgatum L. · Switchgrass

Hansen Hans A

2 records

Panicum virgatum L. · Switchgrass

Artur Maj

PL
1 record

Panicum virgatum L. · Switchgrass

Frans Geijsels

2 records

Nearby in the species list JS Blue Darkness, JS Dark Night, Liadovske, Mardan, Morozko, Niagara Falls, Nosferatu, Oxblood Autumn, Purple Tears, Radmar, RC Chippewa, RC Tecumseh, Sangria, Zoriane

Discussion: RC Big Rock

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