Iris × hollandica 'Blue Pearl' bulbs

Iris × hollandica, known in English as "Dutch iris" and in French as iris de Hollande, is a bulbous perennial available in a variety of colours including blue violet (e.g. 'Blue Magic'), white (e.g. 'Casa Blanca'), yellow (e.g. 'Crown Jewel'), bronze (e.g. 'Bronze Beauty'), and more. These ones should be a rich blue violet.