How do you breed a firework dragon in DragonVale?

The most effective way of breeding a scorch dragon is blue fire (lv 10 left) and a storm (lv 10 right). It has about a 20% success rate.

The egg is red with a turquoise lightning bolt. It takes 3 hours to breed, and another 3 hours to hatch. It can be purchased for 100 gems through the market. It gains you 2500 experience points when it hatches.

Other (slightly less effective) breeding methods include:

• Storm (lv 10 left) + Fire (lv 10 right)
• Cold (lv 10 left) + Firefly (lv 10 right)
• Flower (lv 10 left) + Lightning (lv 10 right)