It's a bit different growing in the north. It's still in the low forties today.
Wow, that might work starting them indoors..
I grow a garden every year but in Northern Calif.... I stopped growing turnips/collards etc as we can get the 80's occasionally in early Feb & they bolt to seed making them very bitter..
I grow bok choi, pok choi(Chinese mustard-mild) guy lan & winter melon as well.... I don't know if I have ever tried Chinese celery.. What does it taste like??