I have them scattered all over in perennial garden beds. The only effort seems to be harvesting the saffron threads and digging up the corms every few years to thin them out. The blooms don't last long and you want to harvest the threads as soon as the flowers open. They don't open all at once so you're checking every day for them.

I dry them on a paper towel for a few days and then store in an airtight jar. The yield is usually three threads per flower, with one flower per corm per season, so it's not much.

If your climate is right, I think it's a great plant to grow, even in containers. The corms keep multiplying every year so you'll end up more than you need eventually.