As suggested by Phil, I feel that my plants to need a 2D effect on them that will make them similar to the rest if my scenes. I found a great tutorial on how to achieve tho effect.
Applying the Toon Shader: Step by Step
Here are test render shots of applying the toon shader to my objects within my scenes.
Applying Texture & Toon Shader to Stem
I applied a glow on the leaves to help them stand out.
Removing & Adding New Leaves // Test Renders
MAY CRASHED!Had to rebuilt Level (3) after Maya crashed and removed/corrupted the scene.
Fruiting Bodies Render & Colour Edits