Flowers liked by God/Godess most :

Lord Vishnu	Dona/Tulsi
Lord Ganesh	Durba
Maa Lakshmi Jee	Kamal
Maa Durga Jee	Red Flowers
Lord Shiva	Bel Patra/Dhatura/Neel Kamal
Lord Surya	Aakh / Lal kaner