Bluebell flowers are dainty bulbous perennials that provide a profusion of color ranging from deep purple to pinks, whites and blues from April to mid May. Although some confusion may arrive from various English and Latin names, most bluebells are also known as wood hyacinths.England and have been gracing gardens and wooded areas with their beautiful bluish-purple flowers since the early 1500’s. These spring delights reach heights of 12 inches and can be planted in the fall for spring bloom. The flowers are fragrant and make a wonderful addition to any cut bouquet. An interesting feature of English bluebell is that the flowers are all on the same side of the stalk, and when gravity kicks in the stalk bends in a dainty curve.
The care of wood hyacinth plants requires minimal energy. These easy-to-please bulbs naturalize rapidly and prefer well-drained soil with a high organic content.Plant bluebell bulbs after the heat of summer has passed or in early fall. Several bulbs can be placed in the same 2-inch deep hole.

[Source]https://www.gardeningknowhow.com/ornamental/bulbs/bluebell/grow-wood-hyacinth-bluebells.htm