Should be planted in spring in well drained soil, needs sun - thereafter, in colder areas, some protection during winter, such as a mulch or cloche or similar, is advisable, but not necessary in the south or west of the country, usually.

I had one of these plants & agree with Bamboo.
Mine was in a pot, so that I could move it close too the house for the winter, but the combination of cold & wet was too much last winter & the bulbs turned to mush, so I would recomend a cloche or unheated greenhouse for the winter now.
Enjoy the aroma!!!!

Don't forget these really smell when they open to attract flies to pollinate them. Don't plant them too close to the house. I have left mine in the ground this year, I'll have to see if they come up again. I originally planted mine about now in gritty compost, I kept them in the greenhouse and I left them dry until the Spring.