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I am doing this already for 45 years by the way.
During that time i selected my own strains; some received from friends, some selected from seeds.

One week ago I planted several plants into the greenhouse (from glass, outside).
If we are lucky in the Netherlands there will be no heavy frost and round the first week of May I could harvest them for oil (Rick Simpsom method).
Those plants will have 2 months to bloom, and when the days are getting longer in May they will revert to growing.
That is the moment to cut them and hang them to dry without any cutting.
The will look ugly but they will deliver very good oil...

I guess you're talking about autos. I have a couple of those growing too actually... but only cause I got them for free from the sponsors :)

No, not automatics.
A little known fact is this: If you put your (growing) plants into an environment with less then 12 hours daylight, they will start blooming immediately.
So, if you put them outside in a greenhouse, round March 1, they will be fully blooming round March 21.
They will vigorously continue to do so.
Round the start of May, when the day gets longer, they will slowly start to revert back to the vegetative state.
That is the moment to cut them, hang them and after several weeks you will have extremely potent material to make oil...

So you're doing sun dep! It's a great method to use season for multiple harvests! I've been doing it too, but on a small scale :) The quality of flowers is often noteworthy!