Poison Dragon

Breeding
The can be bred by selecting a plant dragon to mate with a fire dragon at the Breeding Cave/Epic Breeding Island.

Breeding a plant dragon with a fire dragon can also result in a Flower Dragon.

Earning Rate
Coin per minute:  Level 1:8 / Level 10: 55

Dragon Earning Rates without boosts.

Boost Calculation Guide to use with the page linked above.