Brugmansia Plant Care: How To Care For Brugmansia In Ground Outside - Brugmansia is an eye-catching flowering plant native to Central and South Americas. The plant is also known as angel trumpet due to its 10-inch long blooms. Brugmansia angel trumpet is a monster of a plant and can grow up to 12 feet tall. These plants are not winter hardy but can be grown as annuals in northern climates in the summer.