| Common Name | Black Onion, Nigra Allium |
| Family | Amaryllidaceae |
| Genus | Allium |
| Species | Nigrum |
| Origin | Mediterranean Basin |
| Blooming | Summer, star-shaped purple-black umbels |
| Leaf Color | Grey-green to blue-green |
| Sunlight | Half-shade / Sun |
| Category | Outdoor plants |
| Pet Friendly | No |
Well-draining sandy loam or gritty compost mix to prevent bulb rot
Moderate during active growth, keep dry during dormancy to prevent fungal issues
Full sun exposure required for optimal flowering and bulb development
Apply balanced bulb fertilizer in early spring before foliage emerges
Remove faded flower heads; lift bulbs every 3-4 years for division
These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.
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