Plant Dragon

Obtaining
The is the first primary dragon in the game. It is available in the market for 100.

Alternatively, the can be bred by selecting either a  or a Metal Dragon to mate with an Ironwood Dragon/Malachite Dragon, in either order, at the Breeding Cave/Epic Breeding Island.

Earning Rates
Coin per minute:

Dragon Earning Rates without boosts.

Boost Calculation Guide to use with the page linked above.