More Plants Command Block 1.12.2, 1.11.2 adds 6 new plants, one of them is coral (Underwater) and the rest are all for land. There are spawn eggs to place them if you want them for decoration and there is also a sign where you can click and it will make them randomly spawn if you wanted the command for survival purposes.
How to install:
More Plants Command Block 1.12.2, 1.11.2 Download Links:
For Minecraft 1.10.2
For Minecraft 1.11.2, 1.11