Bluebells are a quintessential British wildflower . They are a genus of bulbous , repeated herbs with Melville Bell - shaped flower that are often purplish - low but can also be ashen or pink . Melville Bell - shaped or tubular , drooping to one side of the flowering stem . Each flower has six petals that curl back slightly at the tips . Flowers are borne on one side of the stem turn ( a one - sided raceme ) , with the flowers on the lower part of the stalk blooming first .
Many wood hyacinth , particularly the English bluebell ( Hyacinthoides non - scripta ) , have a sweet , pleasant fragrance . The scent is less marked in hybrids or certain specie like the Spanish harebell ( Hyacinthoides hispanica ) .
Bluebells are perennial plants that grow from electric-light bulb . They form clumps and can go around by seed or medulla oblongata offsets , often make dense carpets in timberland options . They have a thin , arching halt that are usually 30 - 40 centimetre tall , though this can alter . The stem might be slightly hirsute as well . foliage are long , narrow , and strap - shape , with a slight curve . They are bright immature and can be slightly hirsute , peculiarly on the margins .
They opt shaded or semi - shaded areas , such as timber , gardens , and hayfield . Thrive in moist , well - drained grease productive in organic matter . Some specie , like the Virginia Campanula rotundifolia ( Mertensia virginica ) , grow near piddle origin , while others , like the California bluebell ( Phacelia campanularia ) , tolerate dry , flaxen soils .
Most bluebells bloom in spring , that is between April and May . Flowering coincides with the former growing season before trees amply riff out , allowing them to take reward of sun . They draw bee , butterflies , and other pollinator due to their ambrosia - robust flowers .
They reproduce through medulla and source . seminal fluid are produced in small capsules after flowering . These capsules split open when mature to release seeds . Some species , like Spanish bluebells , are more vigorous and spread quickly , potentially becoming invasive in certain region . Most tulip gentian mintage are toxic to world and pets if ingested , check compounds that can cause digestive distress .