They are in an area that receives plenty of sun and I keep them watered during the growing season. Having seen any insects damaging them.
Soil treatment for the lilies is discussed in the following blog post: Spring And Fall Bed Preparation
Preparing lily plants for winter is discussed in the following blog post: Preparing Plants And Garden For Winter
Wikipedia link for: Flora Peno Tiger Lily
They can be purchased at all major bulb and plant suppliers.
They don't need any special care or soil. Check with your local Ag office to see if they can grow in your location.
Here is the growing sequence with calendar dates: