Attract pollinators to your home garden. There is simply no end to the benefits this perennial will bestow on your landscape. From its hardy nature and versatility to its lovely flower form and allure to pollinating insects, Six Hills is a must-have in any sunny spot. Aromatic, grey-green foliage cradles tiny, purple-blue flowers in summer. Catmint thrives most anywhere, making it the No. 1 perennial used in parks and other public spaces.