Wild Perennial Lupin (Lupinus perennis). Native plants are plants endemic (indigenous) to a given area in geologic time. This includes plants that have developed, occur naturally, or existed for many years in an area (e.g. trees, flowers, grasses, and other plants).Some native plants have adapted to very limited, unusual environments or very harsh climates or exceptional soil conditions.his includes plants that have developed, occur naturally, or existed for many years in an area (e.g. trees, flowers, grasses, and other plants). Some native plants have adapted to very limited, unusual environments or very harsh climates or exceptional soil conditions.