Bolle Jan

Active

Juglans regia L. Persian walnut · Fruit crops

also searched as: болле йан

Variety description

10 August 2026

The tree of this variety forms a wide and rather open crown. It belongs to late-budding forms, thanks to which it effectively avoids damage from recurring spring frosts.

The variety is not self-fertile and requires the presence of pollinator trees to obtain a stable yield, while it can itself act as a pollinator for the Franquette variety.

The fruits are characterized by a large size and rounded shape. The shell of the fruits is rather thick and hard.

Sources5

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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

Maintainer: Information not available - Contact NL authorities 2 164 Responsible for variety maintenance

Admission to trade

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

NL Netherlands Active

№ WNT00040

Registration

30 September 2012
NL Netherlands Terminated

№ WNT40

Registration

30 September 2012

Registry	Number	Application	Registration	Terminated	Status
NL Netherlands	WNT00040	—	30 September 2012	—	Active
NL Netherlands	WNT40	—	30 September 2012	—	Terminated

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

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