Ruth Gerstetter ISK

Active

Prunus domestica L. European plum · Fruit crops · bred by Instytut Ogrodnictwa - Państwowy Instytut Badawczy

also searched as: рут герстеттер иск

Variety description

10 August 2026

The variety was obtained as a result of crossing the Bree and Tsarskaya plums. The tree reaches a height of 4–5 meters, forms a medium-dense, spreading crown, and begins bearing fruit in the second year after planting. The variety is self-sterile and requires pollinators, such as the Stanley variety, for a stable yield.

The fruits ripen in mid-July, have an oval shape and a weight of about 35 g. The color is dark blue with a bluish bloom; the flesh is light, juicy, and sweet with slight astringency and an easily separable pit. The fruits are prone to shedding immediately after ripening and are used primarily for fresh consumption and culinary purposes.

The plant possesses average winter hardiness and relatively high resistance to the Plum pox virus. Fruiting can be irregular, requiring regular maintenance and fertilization.

Sources3

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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.

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

active no record

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

Parties

Breeder: Instytut Ogrodnictwa - Państwowy Instytut Badawczy 468 Developed the variety
Applicant: Instytut Ogrodnictwa - Państwowy Instytut Badawczy 468 Submitted the application to the register
Maintainer: Instytut Ogrodnictwa - Państwowy Instytut Badawczy 468 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

№ SR S185

Application

12 April 1990

Registration

17 October 1990

Registry	Number	Application	Registration	Terminated	Status
PL Poland	SR S185	12 April 1990	17 October 1990	—	Active

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

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Breeder

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

breeder code Ruth Gerstetter ISK

All 468 varieties of company

Registry records

Total records: 1
Jurisdictions shown: 1
First registration: 1990

Same species