Yes, you can grow perennial herbs can be grown in a barrel. The barrel must have adequate drainage holes, and you should fill it with good potting soil. Most herbs prefer to grow in full sun.
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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.