Iris chrysographes Black Bulbs

Iris chrysographes Black, a captivating Siberian iris, reaches a mature height of 18 to 20 inches and blooms in spring. The nearly black, velvety flowers shimmer with a subtle sheen and fine yellow veining on their falls, creating a dramatic garden feature. Borne on slender grey-green stalks, these lightly fragrant blooms attract butterflies and hummingbirds, while their elegance enhances spring bouquets and mixed arrangements.

A hardy perennial (Zones 4-8), Iris chrysographes Black is perfect for naturalizing. It returns year after year, flourishing in group plantings in beds, borders, wild gardens, and along pond edges (though not in water). Its compact growth habit also makes it a stunning choice for containers.

This iris thrives in sunny to partially shaded locations with nutrient-rich, moist, well-draining soil. Slightly acidic soil is preferred, though it tolerates drier conditions. Mulch in spring to conserve moisture, maintain soil temperature, and protect the rhizomes from frost. Feed annually with a nitrogen-rich fertilizer for optimal blooms. Deadhead faded flowers promptly but allow foliage to naturally die back before cutting it away.

Plant Iris chrysographes rhizomes 4 inches apart and 4 inches deep in spring after the last frost. Soak rhizomes in water overnight before planting to encourage healthy growth.