It’s been hit or miss. A started some back in late February and those came indoor on rainy days for about a month. I move the pots around to follow the sun and the older ones have been getting light strikes from a couple security lights that the critters set off. I’m not sure if they’re bright enough to have an effect. Once they’re in the ground there’s 1 light that will be hitting the plants the entire grow - but it hasn’t affected flowering for 25+ years, so thinking it doesnt have much of an effect. Recently I’ve been purposely doing a couple 2 min light hits in the middle of the night as well as an extra hour in the morning and couple hours in the evening from an actual grow light. It’s set to mimic civic twilight (14hrs now) so really more to augment my lack of sun, rather than lengthen the photo period. (These are all my own seeds and I only need one not to flip, so not stressing. If they did flip it’s not a big deal as I don’t have room for them.)
The younger ones (and ones I
do care about) are probably just getting to the point where photoperiodism will have an effect (21 days since they cleared dirt) so not overly worried about them flipping.