is it safe

i just read that starting buds at 6in is ok. now im using some bag seeds. it was a good tasting stoney high for some reg. its been 5 weeks.

You can flower at any time. I put them into flower the day they germinate. Catch up slowcoach, you're 6 weeks behind already

Flowering early impacts on yield. Small plants don't give the best harvests.
Best guide to when you should flower is to work out how tall you can let them grow and start them flowering at about 1/3 of that height. This is a safe formula for your bagseed. You can maybe go to 1/2 max height with some strains but unless you know what you are growing you need to leave a margin for error.

Here you go. This one is about 5 inches high and showed her first flower 23 days ago. 2nd shot is just a zoom in on a couple of the tops. She still has another 5 weeks to pile those pounds on