What a delightful "weed" to have! The whites and yellows also perform better as cut flowers, the other colors don't seem to last quite as well. I do floral design and decor for weddings and last weekend I had the pleasure of working with freesia. It was a big wedding and it wore me out, but that fragrance was such pleasant aromatherapy
I've tried growing them a few times, but it seems our window of time between being too cold and too warm for them is so short they don't have time to develop properly before they fry in the heat. I saw buds develop just as the plants browned and shriveled.