The bottlebrush plant (Callistemon citrinus) requires full sun to grow well, according to the University of Florida Extension. The evergreen shrub or tree grows in USDA Hardiness Zones 9 to 11, and it cannot withstand freezing temperatures.
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Aileen Clarkson has been an award-winning editor and reporter for more than 20 years, earning three awards from the Society of Professional Journalists. She has worked for several newspapers, including "The Washington Post" and "The Charlotte Observer." Clarkson earned a Bachelor of Arts in journalism from the University of Florida.