This year I try to use led light for the plants. Geraniums like to rest over winter in 5 degree. This was not possible so already in February they were full of white flies. It was a job to spray them with soap, spirit and garlic. It did help but in 4-5 days it was back again . So I ended having about 30 geranium pots in the bathroom because they has to be sprinkled with water each time too. As soon as the weather became milder they were put outside. The mints were here too. If frost they cannot survived in pots especially not the rarer ones.
As soon as the seeds sprouted they were put up here. It is all an experiment because I have not tried before to use an indoor facility for keeping the new seedlings.