Manual of Rootstocks

Rootstock comparison table

Rootstock Northern Spy
Summary Trees on ‘Northern Spy’ tend to be shallow rooted and will often develop a one-sided root system. It prefers good soil conditions.
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Using


Northern Spy
Species compatibility Apple
Vigour % of standard 100%
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Growing


Northern Spy
Rootstock size class Standard
Precocity Slow to start bearing
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Climate


Northern Spy
Cold hardiness (USDA) Zone 4 (-34C)
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Identification


Northern Spy
Country of origin United States
Period of origin 1800 - 1849
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Problems


Northern Spy
Fire blight Very susceptible
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