What causes Geranium “sport”?
The sport is caused by a random mutation in one of the cells that gave rise to that particular branch. The bush started from the cutting will keep those characteristics, and all future cuttings will too. Seeds may have some of the traits of the sport, mixed with the other parent plant. Take good care of your sport- almost all named varieties of plants started as interesting sports. I would show it to a plant breeder in your area, and try to sell t. To be truly valuable, someone would have to take out a plant patent on it, but a new geranium could be worth quite a lot, if it is desirable. I would contact a local university horticulture department. Don’t let any plant people near your plant- with tissue culture techniques, they could start a new plant from a tiny scrap of leaf. If you want to learn about the economics of your possible gold mine, read “So you want to start a nursery” by Tony Avent, from Plant Delights nursery. He might buy your sport.
