Canna seeds germinate in about one week. When you plant rhizomes in the ground at an average depth of 2 to 3 inches, canna seeds sprout within a few days to a few weeks. The key determinants are heat, moisture and soil conditions, along with rhizome species, size and quality.
About this Author
Lee Roberts has written professionally in different capacities throughout her career. She has written for not-for-profit and commercial entities since she received her B.A in sociology from the University of Michigan in 1986. She has been published on eHow.com. She is currently writing an extensive work of fiction.