Merveille de Bollwiller
ActiveCorylus avellana L. · Common hazel
WEISSMANN (FR)
10 August 2026
Clark variety trees are approximately 30% smaller in size than the Barcelona variety, which allows for high-density planting. The variety is precocious; the fruits ripen and begin to drop 7–10 days earlier than those of the Barcelona variety.
The nuts are of medium size, while the variety demonstrates a high kernel percentage. The plant possesses moderate resistance to eastern filbert blight (Anisogramma anomala) and bud mite. The variety is intended for commercial use in nut orchards.
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.
Records are sourced from official registry publications. Data sources and legal status
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
Corylus avellana L. · Common hazel
WEISSMANN (FR)
Corylus avellana L. · Common hazel
Piemonte ASPROCOR S.C.C.A.P.A.
Corylus avellana L. · Common hazel
Corylus avellana L. · Common hazel
Corylus avellana L. · Common hazel
Corylus avellana L. · Common hazel
Nearby in the species list CAMPANICA, CAMPONECA, Camponia, CAMPONICA, CARRELLO, CASAMALE O NOSTRALE, Casina, CASTANYERA, Catalonische Zellernuss, Celski, Column, COMEN, COMUNE DI SICILIA, CONSORCIO, Corabel, Cosford, Cosford ISK, Cosford K.2, Cosford nut, Cosforder zellernuss