Annuals: Spacing for zinnia Uproar Rose? , 0 by Zen_Man

Zen_Man wrote:
Possibly a little shorter, especially if they are widely spaced, like 2 feet or more apart. If zinnias are crowded they will stretch to compete for light, with both their central branch and their side branches. I breed zinnias as a hobby, and I use the triangle-honeycomb spacing because it lets me get more zinnias into a space with minimal competition between the individual plants. Individual zinnia plants "do better" if they are two or even three feet apart. The exception to that being wind resistance. Here in Kansas, winds can be a problem, and a somewhat crowded bed of zinnias can help support each other, like in the attached picture. Those zinnias were just close together, and not in a honeycomb layout.

ZM