Last week one of my plants still on veg had a couple little white hairs growing out of it (I figured it was female already because of its bushiness) I don't know though I always heard there is no way to tell the sex of a plant until it is being flowered. But the white hairs are coming out of the node next to the part of the plant that I pruned. Has anyone else had an experience like this?

This happened to me also.
My plant got to a healthy 3ft, and started to show sex(female)while under 24hr lighting.

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Sex can show 5-10 weeks into vegetative growth, depending on strain. I've got 1 footers at 5 weeks showing sex.

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All the reason that I'm holdin' all the trees
And I gotta a lot a weed