Botanical Classification of Grapevines

Question 1

Vitus Labrusca

Answer 1

"northern fox grape"
vigorous climber
-cold tolerant
-resistant to powdery mildew 
-resistant to crown gall
-Native to the eastern US

Cultivars: Concord, Niagara

Question 2

What causes the “foxy” flavors commonly associated with Concord

Answer 2

Methyl anthranilate

Question 3

Vitus Aestivalis

Answer 3

“summer grape”

• vigorous climber
• very cold hardy
• drought tolerant, also tolerates wet and humid summers
• resistant to powdery and downy mildew
• resistant to Pierce’s disease
• very difficult to propagate from cuttings

Cultivars: Norton and Cynthiana

Question 4

Vitus Riparia

Answer 4

“bank grape”

• climbs trees and shrubs along river banks
• earliest to bud break of all American Species

Question 5

Vitus Rupestris

Answer 5

“rock grape”