Wine Grapes ~ Frontenac Gris (white) & Léon Millot (red)

Two cold-hardy wine grapes, one page: ‘Frontenac Gris’ for white and ‘Léon Millot’ for red. Both draw their toughness and disease resistance from wild North American grapes—above all riverbank grape (Vitis riparia)—so they thrive where European wine grapes struggle. Plant one of each and you can make your own white and red from the same backyard trellis. [1][2]

Note: Choose your grape from the drop-down. Both are self-fertile—one vine will fruit on its own. See the comparison table below to pick the right one for your site and your glass.

Which Grape Is Right for You?

Edible Uses

‘Frontenac Gris’ ripens to a high 23–26 Brix with lively acidity, making aromatic white, rosé, and dessert wines with notes of peach, pineapple, and honey—plus a bright juice and jelly [1]. ‘Léon Millot’ makes a deeply colored red with dark-berry and chocolate notes; it is low in tannin and high in malic acid, so home winemakers often run a malolactic fermentation [2]. Both are fine for juice and jam, though neither is a table grape (see our ‘Bluebell’ for fresh eating).

Ornamental Qualities

Big lobed leaves, curling tendrils, and heavy fall clusters make either vine a handsome cover for an arbor, fence, or pergola. Planted together, the gray-pink ‘Frontenac Gris’ and blue-black ‘Léon Millot’ clusters make a beautiful pairing at harvest.

Environment and Culture

Both grapes descend from wild North American vines. Vitis riparia, the riverbank grape, is the hardiest native grape on the continent and the backbone of cold-climate grape breeding [4]. The University of Minnesota’s ‘Frontenac Gris’ is half-riparia by pedigree [1]; Eugène Kuhlmann’s ‘Léon Millot’ crosses a riparia × rupestris (sand grape) parent with the European Goldriesling [2]. The result is two vines that handle hard cold and resist much of the fungal pressure of a wet Northwest spring.

Harvest, Care, and Preparation

Site: Full sun, good air flow, and well-drained soil; avoid frost pockets, since ‘Léon Millot’ breaks bud early [3].
Training: A sturdy trellis or arbor; prune hard every winter, keeping a permanent framework and a few strong canes or spurs.
Pollination: Both self-fertile [1][3].
Harvest: ‘Léon Millot’ first, in early fall; ‘Frontenac Gris’ later, once it reaches full sugar [1][2]. Net against birds as the clusters color.

(See Planting Guide in next tab for more info.)

Attributes

FRONTENAC GRIS (white)

• Type: Cold-hardy hybrid wine grape (sport of ‘Frontenac’) [1]
• Native Heritage: Vitis riparia in pedigree [1][4]
• USDA Zones: 3–8 (survives about −35 °F) [1]
• Light: Full sun
• Pollination: Self-fertile
• Bearing Age: 2–3 years from planting
• Ripening: Mid-to-late season [1]
• Use: White, rosé, and dessert wine; juice; jelly [1]

LÉON MILLOT (red)

• Type: French-American hybrid wine grape (Kuhlmann, 1911) [2]
• Native Heritage: V. riparia × V. rupestris in pedigree [2][3]
• USDA Zones: 4–8 [3]
• Light: Full sun
• Pollination: Self-fertile [3]
• Bearing Age: 2–3 years from planting
• Ripening: Early [2][3]
• Use: Red wine; juice; jam [2]
• Our vines: Self-rooted (grown on their own roots)

References

[1] University of Minnesota Grape Breeding — “Frontenac gris” (2003 release; hardiness to −35 °F; 23–26 Brix; wine style; disease notes). mnhardy.umn.edu
[2] “Léon Millot” — breeder Eugène Kuhlmann (Colmar, Alsace, 1911); pedigree; early ripening; small berries; deep purple, low-tannin wine. Wikipedia
[3] Double A Vineyards — “Léon Millot” cultivar notes (zones 4–8; early bud break; medium vigor; disease ratings; self-pollinating). doubleavineyards.com
[4] USDA PLANTS / NatureServe — Vitis riparia (native range and role in cold-hardy grape breeding).

Pot Sizing Guide