Planning outside grow in late June

I am thinking about planting outside, I already have 2 plants growing in my backyard, they are about 60cm tall and approx 2 months old and look healthy , what happened is one day I just threw some extra bag seed on the ground and 2 of them came to life
So in the same spirit I was thinking about planting some more (mostly to have more material to make hash from, as I dont wanna use my indoor grown plants for hash).
My main question is, if I plant them this week when approx will they be done ? Where I live the sun/night will be 12/12 in about mid september.
I have never grown outside so I would really appreciate some advice.

auto-flowering

Are you in Australia? Judging by the time you get 12/12...

I'm in eastern Europe.
And I am thinking auto flowering but for indoors, too bad seeds are fakin expensive.

Sorry I'm not familiar with your area... Could of helped if you were in Australia... But good luck