Black Hollyhock

Alcea rosea 'Nigra'

Seeds per pack ~ 25   

(Packed for 2026)   

Origins:  Black hollyhock (Alcea rosea 'Nigra') is a striking variety of the common hollyhock, originating from Central and Southwest Asia. Hollyhocks have been cultivated for centuries, spreading throughout Europe and the Americas. The dark-flowered variety, often called "black" due to its deep maroon or near-black appearance. It has been grown since at least the 17th century in Europe and was favored in historical cottage gardens. Black hollyhocks are a dramatic and rewarding addition to any garden, offering bold color, pollinator benefits, and a historic charm that makes them a standout among classic cottage garden plants.

Characteristics:  Grows upright, with flower spikes emerging from a basal rosette of leaves. Flowers are a deep maroon to nearly black, single or semi-double, appearing in mid to late summer. This flower is tall and stately, typically growing between 5-8 feet (1.5-2.5 meters). Produces large, lobed, and slightly hairy leaves.

Technically a biennial but often behaves as a short-lived perennial, reseeding itself readily. Attracts bees, butterflies, and hummingbirds.

Uses: Black Hollyhock has many uses. As an ornamental: Ideal for cottage gardens, borders, and as a backdrop for shorter flowers. It is also a great choice for bee-friendly gardens. It has historically been used to create natural dyes in shades of purple and blue.

Also used as an herbal remedy for soothing skin irritations and respiratory issues, though not as commonly as other Alcea species.

Growing Tips:  Start seeds in early February in pots outdoors or direct seed in March.  12” Spacing.  Sunlight: Full sun (at least 6 hours per day). Prefers well-draining, rich soil with moderate moisture. Tolerates a range of soil types but prefers slightly alkaline to neutral pH. Watering should be moderate. This hollyhock is drought-tolerant once established but benefits from regular watering in dry periods.

Space plants 18-24 inches apart to allow air circulation and reduce disease risk. Consider using support such as tall stalks. May need staking, especially in windy areas.

Propagation: Direct sow in late spring or early summer for blooms the following year. Allow some flowers to go to seed for natural propagation. Susceptible to rust (Puccinia malvacearum), which appears as orange-brown spots on leaves. Prevent by ensuring good airflow, removing affected leaves, and avoiding overhead watering. In colder climates, mulching around the base can help overwintering plants survive.