Bluebells make a lovely carpet of blue, especially in a woodland setting, and are a quintessentially British woodland flower. In fact, about half the bluebells in the world grow in the UK and they are a very popular plant.
In the right conditions, Bluebells grow themselves.
Bluebells carry a gardening warning that they can be invasive. Bluebells can take a little while to get established, but once established, they can out-compete other plants and take over. In good growing conditions, Bluebells are vigorous and become hard to eradicate, so take care where you plant them. In some conditions, they can be considered weeds. If you consider the sorts of places where Bluebells are admired and look at their best, it is in a wild, or semi wild setting with lots of room such as a woodland. Most gardens are not large enough to accommodate a woodland area, and a good alternative to Bluebells, which is less invasive, is the spring flowering bulb Camassia. Although flowering a little later, late April onwards, it is far better behaved and more suited to smaller spaces.
It is important from the conservation perspective to buy and plant only English Bluebells. There is an impostor, Illustrated below which is the Spanish bluebell. It is even more vigorous than the English variety, (if anything could be) and the natural movement of pollen by bees will cross pollinate with the English variety to contaminate the strain. This will threaten the purity and longevity of the English bluebell, which is a more delicate, attractive flower. By checking you buy and plant only English bluebells, you ensure our native species cannot be out competed by the Spanish variety.
Information about other types of Spring Bulbs.