Sheegene-20
ActiveVitis vinifera L. · Common grape vine
TIMOTHY SHEEHAN
10 August 2026
The variety is the result of a natural cross between Cabernet Franc and Magdeleine noire des Charentes. The vines are vigorous, especially on fertile soils. The leaves are dark green, five-lobed, and often have a funnel-shaped curvature. The clusters are medium-sized, cylindro-conical, and medium-dense. The berries are medium-sized, round, dark blue with a waxy bloom, and have thin, tough skin and juicy flesh.
The period from bud break to technical maturity is 152–164 days. The variety possesses relative resistance to downy mildew, but is highly susceptible to powdery mildew and prone to gray mold due to its thin skin. It is sensitive to spring and winter frosts and prefers well-drained clay soils.
6 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.
Variety registered as early as 3 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ 1035469
№ 6050573
№ Merlot_VITIS VINIFERA L.
№ 30202110240710
№ 006/55
№ 10900134
№ RBE 00194
№ 2010125
№ 217R080
Records are sourced from official registry publications. Data sources and legal status
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Same species
Vitis vinifera L. · Common grape vine
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Vitis vinifera L. · Common grape vine
Timothy P Sheehan, Sheehan Genetics LLC
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INCONNU (FR)
Nearby in the species list Mérille, Merlese, Merlin, Merlo, Merlo cl. 10 27, Merlo cl.181, Merlo cl.182, Merlo cl.342, Merlo cl.347, Merlo clon 10 27, Merlot blanc, Merlot Kanthus, Merlot Khorus, MERSEGUERA, Merzling, Mesania B, Mescle, Meslier Saint-François, Mészi Kadarka, Mészikadar