Japanese Anemones – full of Eastern Promise The elegant Japanese Anemone ( Anemone hupehensis and A. x hybrida) always seems so delicate near the back of the herbaceous border, with pretty pink to white flowers held upon wiry stems. But this late bloomer is really as tough as old boots, making large clumps to enliven the Autumn gardens. Its strong stems need little if any support, often reaching over 1.5m high.