Chuck, Louis, and others, Very interesting...all of the replies. My intent was not to stir up debate on messing with nature to the degree of artificially splicing the genes of 2 different phyla...I would think that everyone on this NG is opposed to that kind of science-gone-berserk. I was actually thinking how I might get my children interested in gardening while also giving them a head start in biology 101. In addition, I have thought it would be useful to perhaps cross pollinate two varieties (or more) to achieve certain characteristics not found in a tomato you are familiar with. For example, if you really like the taste and texture of a certain variety but it doesn't grow in your climate, perhaps you could (in a controlled environment) cross and stabilize it with a variety that does. From the discussions, it seems that the stabilizing such a variant could be next to be impossible, but perhaps worth a try. Is this easier than trying a multitude of existing varieties? Maybe not. However, it might be more interesting/rewarding depending on the inclinations of the individual :^) >By definition an heirloom tomato is one that is open pollinated AND had >been in existence since WWII. I guess we would just call it open pollinated and stabilized. Sorry, didn't mean to misuse the semantics of what an "heirloom" tomato is. I agree with Louis. I was talking about creating your own stabilized OP variety. In my mind though, if you were successful and passed it on to your children, then it could become a family heirloom...er, never mind. Still waiting for seeds, Greg Park CEO-in-Training Park Steel Company, Inc. Park.Steel@worldnet.att.net Zone 10