Final answer:
To get a blue fire in DragonVale, you need to breed specific dragon combinations.
Step-by-step explanation:
In DragonVale, to obtain a blue fire, you need to breed specific dragon combinations. To create a blue fire, you can breed a Frostfire Dragon with a Fire Dragon or a Frostfire Dragon with a Blue Fire Dragon. The breeding combinations can vary, but these are the common ones. Once you have bred the correct dragon combination, you can hatch the egg and have a blue fire in your DragonVale park.
Learn more about DragonVale blue fire breeding