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I posted this to the Coleus forum, but I'm trying this one also. It's a fact that the newer cutting-propagated coleus don't bolt like the old seed-propagated varieties like the Wizard series. That's one reason they are much preferred by growers. Some of them don't produce flowers at all, and some are sterile even if they do bloom a little bit just before cold weather gets them. My question is, what is the scientific explanation of why this is the case? I'm not asking if the phenomenon is true- I'm trying to find an explanation.
Many thanks
James
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