Whats your quickest transition into flower?

Have a chemdog #4 from Blimburn here and it has to have had the quickest transition into flower out of any plant I have grown. Keep in mind they were planted into a 12/12 schedule hence the size lol.

12 November, flower started after topping.

3rd December


Not a bad effort for like 21 days flower. The Nepali beside it pre flowered at the same time and is moving pretty quick for a sativa dom as well (nowhere near as fast as the Chem but still decent)
November 13

Dec 3

Sativa as all shit

What has been your fastest transition into flower?

I've had mature clones transition in 4-5 days with a good environment but I would say 7-8 days was average. I've also had clones from the exact same plant take 21+ days because it was waaay to cold for 1.5-2 weeks in my room. The environment has lots to do with plant growth and speed.