I mean if the plant is outside it'll SURVIVE with just a few hours of direct sun but it wont thrive unless it get's that certain number.. which is different for every strain Id suppose. I had two small plants just like yours that were budding on the 6th node but the bugs had killed all the leaves so it was just a little bud sitting on the top.. I think it's interesting how the plants would only bud vigorously from the 6th node up. Anything lower was just showing pistils and eventually would have just been popcorn if that.