'Black Knight' Butterfly Bush 3 Gallon Potted Shrub Light Give your cat the specialized Birds Give your cat the specialized nutrition they needs to thrive and be their best self with Purina Pro Plan Specialized Weight Management Chicken & Rice Formula adult dry cat food and Poinsettia This flowering butterfly bush plant features very dark purple conical flower heads that have a bloom time from early to mid summer to early fall at their prime As long as you have a sunny planting spot this flowering perennial shrub will flourish with big purple flower heads whose fragrance will attract butterflies and other pollinators like bees or hummingbirds to your landscape