I would say your soil quality has probably played a part, also when outside you're really at the mercy of the elements - rain and temperature. I've grown a bunch of tomatillos in pots this year and ran out of tomato compost so mixed up some normal potting compost with topsoil and the plants in the less rich mix are rubbish in comparison.
Figured. I’ll get them nicer soil next go around then. Before I started adding fertilizer they were not growing more than 6/7in so I’m happy if they produce anything at this point!
I would say your soil quality has probably played a part, also when outside you're really at the mercy of the elements - rain and temperature. I've grown a bunch of tomatillos in pots this year and ran out of tomato compost so mixed up some normal potting compost with topsoil and the plants in the less rich mix are rubbish in comparison.