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Dirksen Thornless

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Rubus L. Blackberry · Ornamentals

also searched as: дирксен торнлесс

Variety description

10 August 2026

The bush is vigorous, semi-erect or semi-trailing, with canes 1.5 to 3 meters in length, requiring cultivation on trellises or supports. The variety is completely thornless, which facilitates maintenance and harvesting.

Fruits are large, oval or oblong in shape, black with a gloss, and possess a sweet taste with slight acidity. The variety is characterized by good resistance to Septoria leaf spot and anthracnose, moderate tolerance to powdery mildew, and requires covering in cold winter conditions.

Harvesting takes place between July and October. The variety is a descendant of forms with the recessive thornless gene and has served as a breeding basis for a number of other well-known blackberry varieties.

Sources8
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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.

QZ

terminated no record

Also known as

A single variety may be registered in different countries under different names. All records are consolidated into one profile based on the breeder's code—an internal number that is identical for the variety across all registries.

  • Dirksen Thornless primary SI
  • DIRKSEN_THORNLESS QZ

The primary name shown is the one under which the variety is registered in the largest number of jurisdictions. Search finds the variety by any of its names.

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

Admission to trade

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

  • SI Slovenia Protection expired

    № RUB003

    Terminated
    1 January 2005

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: Blackberry

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Sills Gavin R.|Watsonville, CA, US / Moyles Stephen B.|Soquel, CA, US / Pabon Andrea M.|Watsonville, CA, US

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Darrow

Active

Rubus L. · Blackberry

RO SI
2 records

Dirksen

Active

Rubus L. · Blackberry

1 record

Nearby in the species list Brianskij rubin, Buckwick Tayberry, Cacanska Bestrna, Čačanská beztrnná, Chester, Chester Thornless, Choctaw, Cola I, Darrow, Dirksen, Dorman Red, Dormanbeere, Dormanberry, DOUGLAS, DrisBlackFive, DrisBlackFour, Drisblacksix, Drisblackthree, DrisBlackTwo, Driscoll Carmel

Discussion: Dirksen Thornless

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