This grower is fairly sure of this plant identification.
pot of 3-4 bulbs.
Scilla genus (Squill). This genus consists of about 90 species of bulbous perennials with strap-shaped leaves, which will produce terminal racemes of blue flowers in early spring to late autumn. Some species will bloom in pink, purple and white and will produce tiny, usually star-shaped flowers which are clustered.
They are fully to half hardy, but will need an open site, sun or partial shade and well drained soil. They should be planted in the autumn.
Grown for its flowers.