Description

Allium nigrum, also known as Black Garlic, is a striking ornamental onion that offers both architectural form and ecological benefit. This organic crop is grown without synthetic fertilisers or pesticides, making it a sustainable option for professional landscape schemes and biodiversity-conscious projects.

The dense, globe-like flower heads emerge on sturdy 80–100 cm stems in early summer, displaying clusters of ivory-white, star-shaped blooms with a delicate green centre. Its upright form and long-lasting presence make it perfect for adding structure to perennial borders, prairie-style plantings, or as a vertical accent among grasses and herbaceous layers.

Favoured by pollinators and low in maintenance, Allium nigrum is an excellent naturaliser in fertile, free-draining soils. It partners well with hardy geraniums, salvia, or ornamental grasses and contributes to seasonal succession planting. A practical and elegant addition for trade professionals seeking resilience, impact, and eco-conscious performance.