Skip to content
agronom.cc cultivar database

Katja

Terminated

Saintpaulia H. Wendl. African violet · Ornamentals · bred by HARKES| Dr. P.A.A. Harkes

also searched as: катйа

Variety description

10 August 2026

The Saintpaulia variety Katja is a standard plant intended for cultivation in 4-inch pots. It is characterized by the presence of simple blue-colored flowers with a bicolored pattern and dark green foliage.

The plant is widely used as a model organism in laboratory studies, particularly for researching interactions with the pathogenic bacterium Erwinia chrysanthemi. The variety is an ornamental indoor plant.

Sources4
  • Loading…

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.

IS FI NO SE EE IE GB DK LV LT NL DE PL BY PT ES FR BE CZ SK UA RU LU CH AT HU MD IT SI HR RS RO MT GR BG CY

terminated no record

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

Parties

Breeder
HARKES| Dr. P.A.A. Harkes 3 Developed the variety
Applicant
GENVAR VITRO| Genvar Vitro B.V. 3 Submitted the application to the register
Rights holder
GENVAR VITRO| Genvar Vitro B.V. 3 Holds the rights to the variety

Plant breeders' rights

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

Germany № USV 00368
Terminated
  1. Application filed 8 July 1992
  2. Registered 23 December 1992
  3. Entry closed 21 December 2000

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: African violet

All 97 varieties of species

Agnes

Terminated

Saintpaulia H. Wendl. · African violet

HOLTKAMP JUN| Hermann Holtkamp jun. in Fa. Hermann Holtkamp KG

DE
1 record

Asako

Terminated

Saintpaulia H. Wendl. · African violet

HOLTKAMP JUN| Hermann Holtkamp jun. in Fa. Hermann Holtkamp KG / HOLTKAMP REINHOLD| Reinhold Holtkamp / HOLTKAMP RUDOLF| Rudolf Holtkamp

DE
1 record

Maki

Terminated

Saintpaulia H. Wendl. · African violet

HOLTKAMP JUN| Hermann Holtkamp jun. in Fa. Hermann Holtkamp KG / HOLTKAMP REINHOLD| Reinhold Holtkamp / HOLTKAMP RUDOLF| Rudolf Holtkamp

DE
1 record

Izumi

Terminated

Saintpaulia H. Wendl. · African violet

HOLTKAMP JUN| Hermann Holtkamp jun. in Fa. Hermann Holtkamp KG / HOLTKAMP REINHOLD| Reinhold Holtkamp / HOLTKAMP RUDOLF| Rudolf Holtkamp

DE
1 record

Julia

Terminated

Saintpaulia H. Wendl. · African violet

ZEHRER| Karl Zehrer

DE
1 record

Kazuko

Terminated

Saintpaulia H. Wendl. · African violet

HOLTKAMP JUN| Hermann Holtkamp jun. in Fa. Hermann Holtkamp KG / HOLTKAMP REINHOLD| Reinhold Holtkamp / HOLTKAMP RUDOLF| Rudolf Holtkamp

DE
1 record

Nearby in the species list Heidrun, Henrike, Hiltrud, Holly, Ignace, Ineke, Inga, Isolde, Izumi, Julia, Kazuko, Keiko, Kristel, Lausyra, Linetta, Lucy, Lyra, Maki, Marianne, Mariko

Discussion: Katja

0 messages

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

Comments are open to signed-in readers. Sign in · Sign up