Hello!

I planted couple of seedlings 3 weeks ago, and it looks like they have been grown pretty nicely.

I had 2 times more plant than in the picture below, but one day I have chosen to move half of them to my garden outside.

The plants outside have stopped growing (or just growing slowly), and the plants inside continue to grow.

My question is this - When can I move this plant outside and not worry it will stop growing?

What's next?