I'm talking a combo of heat, humidity, and light intensity. If you're vegging under, say, a 100w cfl or something.. The sun is going to assault the plant at first lol It'll get used to it. But that's a drastic difference in spectrum and PAR. Then on top of that, there's humidity that comes into play. As well as temperature. Looks like a hot dry summer day. Or a hot humid day. Whichever it is, it's probably not the same as it was inside lol
It's highly likely that the plant is just shocked by a much more intense environment.
And I'd say if it's gonna be an outdoor plant, let it be an outdoor plant.
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