Yes. People that only grow indoors are used to the 18/6 -12/12 time schedule... but plants can't tell time lol. They go into flower as soon as they sense the days shortening after the solstice, especially if they are mature, showing sex, vigorous and ready to rock and roll. They get thier stretch on and it's off to the races come summer. I'm still shocked by how fast flowers start to form sometimes. My earlier strains usually start showing preflowers by around the second week of July, and most all, even sativas, are flowering by the beginning, sometimes mid August. It's not the starting that's the issue, it's the finishing. I've contemplated some of the tricks people use to induce flower earlier, but I'm too afraid to make them herm out or something, so I just stick to busting my ass to keep them dry and happy come September when the dew starts setting in daily until I harvest. I leaf blow them early and by 7:30- 8, the sun is shining on them and they get fully dry. Everyone has a different living situation, climate, budget, skillset, and desired outcome. As long as we get to light one up at the end of harvest and it's smokable... who cares how we got there?