Hybridizers: It can be fun to breed your own zinnias - Part 3, 1 by Zen_Man

Zen_Man wrote:
John,

Etiolation is a form of growth seen in plants receiving insufficient light. It is characterized by long, weak stems, small leaves, and chlorosis. In your case, the seedlings may be just crowded and competing for light. A plant is its own worst weed, because of the exactly same needs.

Excessive sodium bicarbonate could be harmful for two reasons, alkalinity and sodium phytotoxicity.

I'm attaching a picture of another of the "dinosaur zinnia" progeny. I think we have only scratched the surface of what zinnias can do.

ZM