I start my seedlings indoors in March then transfer to the greenhouse in April or May; depending on the last frost and future weather forecast.
I do have some herbs inside (feverfew, catnip , oregano) and two tomato plants- these were an experiment over the winter and they are holding tough.
That's awesome! I heard you can actually bring peppers inside in the Winter and they will actually last multiple years... I'm going to have to look into that some more!