Sunset says no good in zone 37 (stops at 34 and 39).
Sandy soil tolerance is debated (Dove/Woolridge and JerseyYards.org vs. White Oak and the USDA). Native to wetlands, swamps, and stream banks. Flowering and fall color are better with at least some direct sunlight.
Flowers are honey-scented.
Despite being native, sweetspire is listed by Doug Tallamy as supporting no butterfly/moth larvae, while the National Wildlife Federation lists it as hosting only one species.
'Henry's Garnet' has earned the PHS Gold Medal Award. 'Sprich' (Little Henry) is more compact but will still get as big as 'Henry's Garnet' according to both Dirr and UConn, despite the marketing claims. 'Merlot' is compact to about 3'.
Sources: White Oak, Sunset, Dove/Woolridge, NCSU, OSU, JerseyYards.org, UConn, Odenwald/Turner, USDA, Bir, Druse.
Buy 'Henry's Garnet' at PlantingTree.com (affiliate link; supports this website)
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