Cerebro

nice start
i cant imagine what's going to happen when they get bigger
the different colours on the stem do usually just mean a different kind, we call them pheno's, same genetics, but different characteristics
it's also possible that two different males pollenated the same plant giving two related seeds, but that's unlikely
the plants look healthy
it sounds like you aren't planning on letting them finish
how do you see this playing out?
what about focussing on one, or two plants, after you have determined sex?

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