Protected Series:
Zone: 5
MAXIMA BLACKEYED SUSAN
Rudbeckia maxima, commonly known as the Great Coneflower or Cabbage Leaf Coneflower, is a dramatic selection with native roots that commands attention in any landscape. It is most famous for its stunning basal foliage - large, glaucous, silvery-blue leaves that resemble cabbage, providing a unique metallic texture long before the flowers appear. In mid-to-late summer, 'Maxima' sends up towering, sturdy stalks that can reach heights of 6 to 7 feet, topped with bright yellow flowers. These blooms feature distinctively drooping petals that surround an exceptionally tall, dark brown central cone, which can reach up to 2 or 3 inches in height, adding a bold vertical element to the garden.
To thrive, Rudbeckia maxima should be placed in full sun, as it requires substantial light to support its tall flowering stems and maintain the vibrant blue-gray hue of its foliage. It is highly adaptable to various soil types, including heavy clay, and actually prefers moist, well-drained conditions, making it an excellent choice for rain gardens or low-lying areas of a meadow. However, once its deep taproot is established, it is remarkably drought-tolerant and heat-resistant. It is a "workhorse" for pollinators, attracting a wide variety of butterflies and bees. To maximize its wildlife value, avoid cutting the stalks back in the fall; the prominent dried cones are a favorite food source for goldfinches and provide a striking silhouette against the winter sky.
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To help this plant settle in and thrive, we recommend these standard planting practices: Plant in well-draining soil with full sun. Water regularly, but avoid overwatering. Mulch around the base to retain moisture and suppress weeds. Fertilize lightly in the spring with a balanced fertilizer.
Available cultivars in this genus:
