Product review for California Giant Mix Zinnias Overall Rating: Write an online review and share your thoughts with other customers Sort Reviews: Newest | Oldest | Highest Rating | Lowest Rating   :: Viewing page 1 of 1  -  Sunday, March 25, 2007 Really GIANT Reviewed By: Mike (Palms Springs, CA) We live in the desert in Southern California and planted California Giant last summer. They were huge. They got to nearly 5 feet and then drooped over and took off again. It was in a space where we couldn't have something quite that big so we kept chopping them off and they just kept coming back. The did well even when the temps got over 120 degrees in July. Highly recommend if you have the room.