Plant health.

The next stage into Bloom is the stretchphase, so your Plants still need a bit of N, than comes the buddingphase then the ripeningphase. in the buddingphase you go for more PK in the ripening more k but than you need a flush. Hope that helps. Dont stop feeding just becaus you switched to bloomcycle (if you give nutes in veg).

looking good. They will still need nutrients but maybe in a diffrent ratio then what you where feeding them. So look at the directions on the bottle and see what it susgests for your style of growing.

Hi and thanks a lot for your question! Could you tell us a bit more about your plant? I couldn’t see from your profile whether it’s an autoflower or a photoperiodic strain. If it’s an autoflower, it will naturally start flowering on its own that just happens. If it’s a photoperiodic plant, it can sometimes take a week or longer, but you’ll definitely notice the difference. Why did you stop adding nutrients? Usually, nutrients are phased out about 1 to 2 weeks before harvest, but that can vary depending on your grow style for example, with organic nutrients, it’s not necessarily required. Flushing is typically done when using mineral fertilizers, though technically some growers also do it with organic ones.

You might see some preflowers at base of branches within 7-10 days after flip to 12/12 light schedule. Not long after that the terminal buds will start looking a bit odd before you see tufts of 'white hairs' (pistils) after 14-16 days or so. bud sites will mostly be formed by ~30 days. How much they fatten up from there will vary greatly by seed. Some genetic variation to this schedule, so it happens when it happens. Don't think to hard on it. Choosing harvest is a reaction to observation and not a pre-ordained, top-down thing.... A trigger and an action. Time varies.