The *only* reason I am even listing this hybrid, which Sunset does not recommend north of the warmer parts of zone 32, is because the cultivar 'San Jose' is touted as the closest thing we can get to O. fragrans (though without reblooming) in our climate, having survived -12°F. Dave's Garden has a report of it growing in Wilmington, DE, which is USDA zone 7a by the 2012 map (and close to zone 8 by the 2015 map from the Arbor Day Foundation).
Readers in warmer climates may note that 'Fruitlandii' grows faster than typical; Dirr calls it possibly the best form available.
Juvenile leaves are spiny.
Sources: UFL, Sunset, Dirr, Cal Poly, Odenwald/Turner, NCSU.
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