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Olga

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Corylus avellana L. Common hazel · Fruit crops · bred by Tomasz Borkowski

also searched as: олга

Variety description

10 August 2026

The shrub has high vigor, forming a dense crown with vertically directed shoots. Leaves are large, elliptical, with an intense red color in spring, later acquiring a green shade with a distinct carmine tint. Female inflorescences with red stigmas bloom earlier than the male ones, which have a reddish-brown color.

Fruits are large, cylindrical or oval in shape, brown with stripes, and well-filled within the shell. The husk is longer than the nut and colored red-pink. The variety enters bearing early; nuts ripen in September–October and do not fall out of the husk after maturation. The plant has high frost resistance, withstanding temperatures down to -32°C.

Sources3
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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

active no record

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

Parties

Breeder
Tomasz Borkowski 1 Developed the variety
Applicant
Tomasz Borkowski 1 Submitted the application to the register
Rights holder
Tomasz Borkowski 1 Holds the rights to the variety
Maintainer
Tomasz Borkowski 1 Responsible for variety maintenance

Admission to trade

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

  • PL Poland Active

    № R S808

    Application
    6 January 2005
    Registration
    24 January 2011

Plant breeders' rights

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

Poland № O S181
Active
  1. Application filed 6 January 2005
  2. Registered 24 January 2011
  3. Currently active indefinite in the register

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

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Same species

Other varieties: Common hazel

All 431 varieties of species

Corylus avellana L. · Common hazel

Piemonte ASPROCOR S.C.C.A.P.A.

SI UA
7 records

Corylus avellana L. · Common hazel

1 record

ORTOLANA

Active

Corylus avellana L. · Common hazel

1 record

Nearby in the species list Nottingham Prolific, Nottinghams Fruchtbare, Nottinghams Früheste, Nottinghamski, Nottinghamski ISK, Nottinghamski KON, Novosilkivs`kyi, NUSTRALI DI UCRIA, Nux pontica, Okrugli difonski, ORTOLANA, Otaman, Palaz, PALLAGROSSA, PALLAS, PANOTTARA BARATTA PICCOLA, PANOTTARA COLLICA, PANOTTARA GALATI GRANDE, Panskyi, PARRINARA

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