pomme,

Wikipedia has an article on Poinsettias. This link has some information on Poinsettia breeding. This patent describes a method of creating interspecific Poinsettia hybrids.

This New Poinsettia For The Nontraditionalist article might be of interest. This transcript of an Interview with Ruth Kobayashi also might be of interest.

I don't know of any sources that tell you specifically how to cross poinsettias, but a study of their flower structure should show where the pollen is and where it needs to go.

MM

Thank you very much maineman. Very informal. Allo i really wanted to know was how to pollinate them.

Interesting links Maineman Thanks for sharing them...

I Know.... But LOOKIE

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