Hi Almeria,

Except for asiatics, most other lilies have a scent (some quite strong). Your problem will be the lack of a cold season - which many lilies require. You could grow them as annuals, ordering pre-cooled bulbs in the spring, or look for varieties that are rated to your zone.

I understand that Lilium Formosanum is a lily that doesn't require a cold spell. I comes in a very tall (the species) and a short variety (v. pricei). I read that it can bloom all year in climates without a winter. It's an invasive plant in Australia so you might want to check on its behavior in Spain before ordering it.

-Helen

Helen,
Thanks so much for that. Disappointing to know about the cold spell but very, very useful to know. Or maybe I could even try digging them up and storing them in the fridge (which we have to do here if we want tulips to come back). I am going to seek out the Formosanum after I've done some research about invasiveness here.
Thanks so much for your timely help.
Almeria

Hi Almeria,
I know its been awhile but I was looking on the web tonight and found a site about lilies in San Antonio Texas (zone 8b average minimum temperture of -10 Celcius) and I thought of you. While San Antonio may have somewhat cooler Winters their summers are probaby very similar to yours.

As I expected they mentionned the Formosa Lily but they also list Lilium Candidum (the Madonna Lily) as being good for hot climates.

I should have thought of that since the Madonna lily is thought to be native to the Mediterranean. It is planted differently then other liies. It needs basic soil and is planted very shallowly. It can be difficult to get going but is a very beautiful lily. Its the lily you see in renaissance paintings of The Annunciation.

They also mention Longiflorum but note that it doesn't work that well in their zone, and you are hotter still.

I hope this helps. :)

-Helen

http://www.plantanswers.com/arcadia_pages/lilum%20formosanum.htm

Here is a link that might be useful: Lilies in San Antonio Texas