Synonyms: Hall’s Giant, Geante de Halle, Halle’sche Reisennuss.
The name Hall’s Giant is used in Australia and the USA.
It originated in 1788 as a seedling selection by C.G. Bultner at Halle, Germany (USDA, 2010).
The tree is vigorous and spreading with dark green leaves.
Merveille de Bollwiller is late coming into leaf.
It has distinctive dark red to purple buds.
Catkins have a purple blush.
It is an excellent polliniser, bearing heavy crops of healthy catkins and it is compatible with most other varieties.
Pollen is shed late, often for a short period.
Flowering is late.
The husk is slightly longer than nut but most nuts fall free of the husk.
Merveille de Bollwiller is resistant to bacterial blight and big bud mites.
Merveille de Bollwiller has attractive medium to large nuts but it often has low yields.
The shell is thick, brown and glossy.
The kernel is round to oval, firm and free of fibre.
It blanches well.
Percent kernel 36 – 41%.
Merveille de Bollwiller is frequently used as a polliniser as it is compatible with most other varieties.
It has very distinctive reddish or purple buds and catkins.
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