This little squill is a wonderful feature in May along the cliffs of our Pembrokeshire coast path, and elsewhere on the coasts of the British Isles. 2-4 high with starry bright blue flowers, it needs an open well-drained site in the garden.

The main daffodil species of Britain, the one that impressed Wordsworth and known as the Lent Lily. A short plant of 20-30cm (8-12) with pale petals and deep yellow corona, it is found in damp woods and grassland, where it naturalises readily. Flowering in March as this Welsh name implies.

Found naturally on shady stream banks in parts of South Wales and SW England. This has handsome spires of hooded light indigo flowers in summer. In the 13th century it was an important medicinal herb used by the Physicians of Myddfai, but highly poisonous. Also good in borders, it can reach 5ft.

Flowering in September with beautiful pale purple blooms, the lush foliage follows in the spring and for this reason it is also called Naked Ladies. Common names are otherwise misleading as this is neither a Crocus nor produces saffron. Naturally occurring stands in moist meadows in Southern Britain are nowadays a treasure, but it used to be vigorously discouraged in grazing meadows being poisonous to livestock.