This grower is sure of this plant identification.
BRUGMANSIAS ARE EXTREMELY TOXIC.
Brugmansia aurea (Angel's trumpet). This species is an open shrub to small tree. The leaves are minutely pubescent, ovate, long and coarsely toothed when young, later entire. The flowers are trumpet shaped, fragrant or scented yellow becoming white, or rarely, pink, lobes spreading to 5 cm. Flowers are borne mainly from summer to autumn.