Plants that are actually useful... and the one that isn't.

I adore the blue plant. Being able to have true sight for a few seconds from anything that the wave of awesomeness hits is just fantastic. Frankly? You could remove every plant and just keep this one IMO.

Green Plant. Another lovely plant. Low health jungler but you don't want to precious time running back into your jungle? Chased out your enemy top laner and you don't want to stay in lane at low health while they return at full health? Those delicious juicy fruits are the best ever. The amount of HP you get from the fruits are just oh so satisfying.

Red plant. ...I don't like Red Plant. The random boom is just...eh.. I have seen some usefulness I guess? Giving certain champions a way to jump over walls without burning a flash. But frankly where that red plant is, I would much rather prefer a blue plant. I have seen a few funny plays happen, but it's like... I just don't see the overall need for it.

Green plant and Blue plant = http://imgur.com/a/IdPHn

Red Plant = http://i.imgur.com/eBwMnAt.jpg