Royscot, thanks for your input. May I ask if you have looked back over previous posts, especially those in the 'Plants for mediterranean gardens' section? I feel that there is a wealth of information contained there regarding plants that are suitable for mediterranean climate gardens, often with photos attached. I realise that there is no fixed template that defines a mediterranean garden due to the vagaries of location, altitude, etc, but that is where the experiences of members who have actually grown the plants in question is so valuable. I also realise that it involves a lot of time and effort to go back over so many posts trying to find ones that are relevant, but doesn't all research do that?
In April of this year a forum member posted, in the Miscellaneous section, 'Starting point for reading material on this forum?'. Perhaps the advice given by other members on that occasion might be of assistance in your own quest. I wish you good hunting and every success with your Spanish garden venture.