Do celery seeds have to have light to come up in the house?
Certified GKH Gardening Expert
As long as they have heat while germinating, they should be ok with little light. However, once the seedlings have germinated, you will need to place them in an area with plenty of light. This article should help you with growing celery: https://www.gardeningknowhow.com/edible/vegetables/celery/tips-on-how-to-grow-celery.htm