A Grotle using SynthesisGRASS is balance and life, weighing two opposite abilities to cure and to ail. It's a force that is overwhelming when its territory is large.
The Natural OrderEndurance: +20 END, -15 END if sunny, +30 END if rainy
Grass Pokemon are born with innate strength that makes them healthy. This natural health make them enduring and capable to withstand extortion. They regain energy relatively fast, too, making them really ideal for starters. Their defenses and energy in their endurance seem to work differently during rain and sunlight.
Affinity: Life, Balance, Innocence, Perseverance, Patience
Grass is a living thing that brings forth to life at the expense of soil nutrients, water, sun, and carbon dioxide. It's the symbol of balance and innocence. In its continuous growth, it is persevering and patient. It will always return, no matter how many years it has to wait.
Discipline: Resilience
Grass is typically weak and defenseless but it strives to protect and damage by its growth and size. Regardless the damage done, it will always bloom once more and in different corners of life. Grass must always strive.
Image is taken from Bulbapedia, re-hosted in Tinypic