Does not seem to be anyone growing it yet but yourself.
growdiaries.com/seedbank/sweet-seeds/black-muffin-f1-fast-version
best of luck with it. Most plants will grow just fine with basic care, its a fast version so has the off chance it will turn auto but can treat it like a photoperiod in most regards.
Top it. LST it, HST it do w/e your heart desires.
No.
But I am growing some f1 s at the moment.
What do you want to know? You can’t reply here so dm me or ask a question that has more than a yes or no for the a