The arrival of spring brings blossoms and warmer weather - but it's not all sunshine and sunflowers.  If you're part of the 20% of New Zealanders affected, you'll know all too well that spring is the season when hayfever is the hardest. 

Part of effectively managing your hayfever is having a good grasp on what it is, how it's caused and some of the things you can do to avoid hayfever triggers.