Most annuals may be planted 8 inches apart if the goal is a more immediate, showy presentation and 12 inches apart if the goal is to provide maximum growth room. Be warned, however, that some annuals require up to 36 inches of space to thrive, so check plant labels.
About this Author
Alice Moon is a freelance writer with more than 10 years of experience. She was chosen as a Smithsonian Institute intern, working for the National Zoo in Washington, D.C., and has traveled throughout Asia. Moon holds a Bachelor of Science in political science from Ball State University.