Thalassa

Active

Brassica oleracea L. (Cauliflower Group) Cauliflower · Vegetables · bred by HM.CLAUSE

also searched as: таласса

Variety description

10 August 2026

The hybrid belongs to the mid-maturing group, with a vegetation period of 85–90 days. The plant is adapted to various growing conditions, including hot climates. It is characterized by uniform ripening and high self-covering ability of the leaves, which protect the head from sunlight, temperature fluctuations, and pests.

The heads have a rounded, knobby shape and a uniform white color. The marketable weight of the heads ranges from 1.2 to 3 kg.

Sources2

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Countries of admission

5 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.

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 terminated no record

Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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: HM CLAUSE SA 933 Developed the variety
Applicant: HM CLAUSE SA 933 Submitted the application to the register
Maintainer: HM Clause SAS (FR) 1 095 Responsible for variety maintenance

Admission to trade

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

QZ European Union Active

№ 253408
FR France Terminated

№ 0061840

Application

12 September 1988

Registration

1 January 1990

Terminated

1 January 1991
FR France Active

№ 0071286

Application

2 October 1996

Registration

1 January 1998
CZ Czechia Protection expired

№ 3820

Application

2 January 1997

Registration

2 April 1999

Terminated

2 April 2009
HU Hungary Terminated

№ 147099

Application

5 February 1998

Registration

29 May 2000

Terminated

20 December 2006
SK Slovak Republic Terminated

№ 4120

Application

9 February 1998

Registration

30 March 1999

Terminated

20 October 2006
GB United Kingdom Active

№ 59/14512

Application

26 November 2018

Registration

31 December 2018

Registry	Number	Application	Registration	Terminated	Status
QZ European Union	253408	—	—	—	Active
FR France	0061840	12 September 1988	1 January 1990	1 January 1991	Terminated
FR France	0071286	2 October 1996	1 January 1998	—	Active
CZ Czechia	3820	2 January 1997	2 April 1999	2 April 2009	Protection expired
HU Hungary	147099	5 February 1998	29 May 2000	20 December 2006	Terminated
SK Slovak Republic	4120	9 February 1998	30 March 1999	20 October 2006	Terminated
GB United Kingdom	59/14512	26 November 2018	31 December 2018	—	Active

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

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Breeder

HM.CLAUSE

breeder code Thalassa

All 933 varieties of company

Registry records

Total records: 7
Jurisdictions shown: 5
Not yet disclosed: 1
First registration: 1990

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