Not recommended in-ground north of Sunset zone 31 and USDA zone 8 or 9; mainly listed here on the strength of 'Mathilde Ferrier' ('Hardy Double Yellow') and 'Hardy Pink', which according to David Francko's Palms Won't Grow Here can perform well as far as USDA zone 6, if only as dieback perennials (the species dies to the ground when temperatures drop to the low teens Fahrenheit). As is so often the case, I have no idea why AHS claims minimum temperature tolerance of only 50°F.
In any case, any usages or tags that imply tree height (like "street") apply only to climates where this plant stays evergreen.
All parts poisonous and may be fatal. As with poison ivy, don't even burn this plant, lest you release toxic fumes. Sap may also cause contact dermatitis.
Long bloom period. Fragrance varies by cultivar.
As with other heat-loving plants such as crapemyrtle and southern magnolia, withholding water in late summer can improve winter hardiness.
Sources: UFL, Dirr, Sunset, NCSU, Missouri BG, Cal Poly, Odenwald/Turner.
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