Haller's anemone is insulated with dense hairs, allowing it to grow even in freezing temperatures.
Fringed iris is common in many parts of China and Japan and appears to have been cultivated in Europe since 1792.
Chilean blue crocus has brilliant blue flowers, and was thought for many years to be extinct in the wild.
The spring snowflake is a popularly cultivated bulbous plant with delicate white flowers, and belongs to the same family as the snowdrops.
A hardy spring bulb with attractive blue-violet flowers, spring squill is native to western Europe.
Great camas is a bulbous plant native to North America, with broader leaves than other species of this genus, that bears many star-shaped blue or whitish flowers.
The subtly attractive Jacquemont's cobra lily is native to the Himalaya, southern India, and the Khasi Hills region in north-east India, and can be cultivated in shady areas of temperate gardens.
These popular houseplants are known as flamingo flowers owing to the resemblance of the flowering parts to the body and twisted neck of a flamingo.
A distinctive plant from upland areas of Africa and Asia, voodoo lily has flowers that emit a smell resembling rotting meat.
Arisaema consanguineum is a striking plant with rather sinister-looking flowers and bold foliage.