I find freesias growing actively from late Fall to early Spring. It likes our winter rains here, and as much sun it can get when conditions are cool. Come late Spring to summer, after blooming, it will slowly die down and go on for its summer dormancy. But it does need that summer heat dormancy, for its next growth cycle.
Too bad, I think our Tikoy sat on the leaves and dug it so no freesias for me this year.
Love the fragrance, but once it gets too hot like 80F and higher it will fizzle out till next growing season again.
I guess you can grow them indoors, as long as you have good early morning sun, it may not like too much afternoon heat as it hits the windows.