Allium 'Nigrum' is a robust and frost hardy, it is a clump forming perennial. Nigrum thrives best in half to full sun, in a well-drained soil.It would be Ideal for the herbaceous border. It has vivid white flowers with a green eye in the center, It is slightly bigger than a cricket ball cut in half.
This variety is a true showstopper thanks to its 3-inch-wide globes of rich purple flowers. Blooms late spring to early summer. It is one of the deepest-coloured alliums and is fast becoming one of the true favourites amongst gardeners.
Enormous purple globes, up to 15cm across, make a spectacular addition to sunny borders. Plant them in large groups to make a bold impact statement. Also excellent as a cut flower for great looking displays indoors.
Closely packed star shaped flowers form a showy bold globe of intense white on tall, ribbed, ridged stems and make spectacular displays The flower heads are superb for cut flowers and when dried add extra character to your garden displays.