any natural remedies to treat hayfever, allergies and sinuses?

i have the worst hayfever, sinuses and allergies, i find it reall hard to sleep at night my noses are blocked all day everyday, it there a natural way to help feel better. i have tried alomst every nasal spray and i hate them all except on which is called Nasonex which reallly reallly works but its about $60 australian dollars. Do u have any ideas to help treat sinus and allergies preferably natural treatments