The Balang blue poppy, Meconopsis balangensis, is an extremely rare relative of the legendary Himalayan blue poppy.

The legendary Himalayan blue poppy, Meconopsis betonicifolia, is one of the best for the garden.

The Himalayan blue poppy is a horticultural holy grail. Meconopsis 'Lingholm' is one of the best blue poppies for the garden.

Mertensia virginica or Virginia bluebells has clusters of pink buds opening to blue, trumpet-shaped, downward-facing flowers.

Monarda Sugar Buzz 'Blue Moon' is a short, compact, mildew-resistant bee balm with lavender blue flowers.

Muscari 'Touch of Snow' is a cool tricolour with rich, deep blue, royal blue, and icy white to icy blue on top.

Muscari 'Double Beauty' has pale blue and white double flowers held in tight, pyramidal clusters.

Muscari 'Mount Hood' has clusters of mid blue blue flowers with white rings with white flowers at the top of each inflorescence.

Muscari 'Peppermint' has spikes of flowers in varying shades of royal blue to sky blue topped with palest sky blue to icy white.

Muscari 'Baby's Breath' has pale blue and white flowers.

Muscari 'Helena' is a cool tricolour cultivar with rich, royal blue at the base, light blue in the middle, and icy palest blue at the top.

Muscari 'Mountain Lady' has small bell-shaped flowers in shades of royal blue, sky blue, palest blue, and icy white.

Myosotidium hortensia is an exceedingly rare species in horticulture and in the wild. Known as the Chatham Islands forget-me-not.