WREC Horticultural Program
In cooperation with NDSU Plant Sciences, twelve plants each of sixteen grape
planted at the WREC in 2004 and are being
evaluated for winter hardiness, fruit production and potential for wine
making. Included in this trial are:
Some of the
hardiest juice, wine and jelly grapes:
riparia x Fredonia) - SDSU selection. Hardiest of the hybrid grapes.
Blue. Fresh, juice, jelly. Disease susceptibility.
King of the North
From WI. Hardy to -40 F. Red. Great
Juice. Possible rustic table wine. Very vigorous vine - space further
apart in the row (8' or more). Ripens late with high acid.
(has Cabernet Sauvignon and Chardonnay
grandparents) - Hardiness promising.
Red. Dense Dark wine (little
riparia-like in flavor, but distinctive.
The above are being compared with
these less hardy but more desirable wine grapes:
(St Pepin x ES 6-8-25) - UMN. Hardy.
White. Potential for good
dessert or cocktail wine. Foliar phylloxera, downy mildew
susceptibility. Less vigorous fruiting, less hardy than Louise Swenson.
High acid if not fully ripened.
- Elmer Swenson) - Hardy to -40F.
White. Table wine, good for blending.
Susceptible to black rot and anthracnose and wind as tender young plant.
Upright training trellis system. Good vigor and bearing.
(V. riparia 89 x Landlot 4511) - UMN. Hardy to -37F. Red Wine (acceptabel).
Ripens late Sept. Good resistance to downy mildew. Susceptible to black
rot, powder mildew, anthracnose, phylloxera. May need irrigation in
drought. High acidity and late ripening - problematic.
gray/white color/aroma sport from Frontenac.
The same growth/cultural
characteristics but different wine flavor. High acidity at harvest-has
to be finished into a sweet dessert type wine.
(ES 283 x ES 193) - Semi-hardy (less than Frontenac). Hardy to -28F. Red.
Wine. Ripens mid-Sept. Not very prolific fruiting. but vegetatively
vigorous. May do well in ND if grafted onto hardy rootstock, otherwise
(ES 283 x ES 193) - Hardier
sister of St. Croix.
Red. Wine (fair). Vigorous, heavy producer. Good
disease resistance. Higher acid than St. Croix when ripe. Big trellis to
(formerly Hasansky Sladky
- amurensis, vinifera, riparia and labrusca cross) - Russian hybrid.
Earliest ripening (mid-August in MN). Red. Wine-nice fruity light red
wine. May do better by grafting onto hardy rootstock.
(Eona x Kay Gray) - Hardiness Promising, but untested.
(okay). Good table grape. May be pH sensitive(>7.0).
Also included in
(ES 5-3-64 x Petit Jewel)
Red. Table grape. Not expected to be hardy for ND, but
testing will tell (may work in more sheltered microclimates).
UMN Hardy to -35F.
Blue. Large berries. Ripens early/mid-Sept.,
possible iron chlorosis at pH >6.5. Slow production -begins well in 4th
year. Table, juice, jelly.
ES 1553 A hardy rootstock.
Vitis riparia the native grape obtained through the local NRCS.
The grapes are planted in N-S oriented rows 8 feet apart in
and rows 10 feet apart. The trellis is two-arm kniffen
system which has been adequate to this point. A deer exclusion
fence 7 feet high surrounds the planting. In 2006, drip irrigation
was added and was used extensively during the dry late
As of May 11, 2007 there were the following numbers of each cultivar
King of the North (12)
ES 12-18-06 (12)
Prairie Star (1)
Frontenac Gris (8)
St. Croix (10)
ES 5-4-71 (5)
Somerset Seedless (8)
MN 1131 (12)
MN 1200 (12)
ES 1553 (12)
River Grape Vitis Riparia (6)
All varieties except Prairie Star and LaCrescent bore some fruit
in 2006. Prairie Star had poor survival after planting in 2004 and was not
replanted. In 2006, 6 Vitis riparia were planted in that row.
Lorna Bradbury, Horticulturist
Williston Research Extension Center
(These will be clickable links in the future)
Small Fruit Production