Lachenalia 'Aqua Lady' is a unique South African bulb with spikes of sea-green, icy white and lilac tubular flowers.

Lavandula ‘Big Time Blue’ has a beautiful grey-green foliage smothered with large, purplish blue blossoms on fat spikes that start to bloom very early in the season.

Lavandula Blue Cushion is a very compact lavender easier to keep in tight mounds than other cultivars.

Lavandula Platinum Blonde is a variegated creamy yellow and green lavender with classic purple flowers.

Lavandula ‘Super Blue’ has grey-green foliage smothered with large, mauve-blue lavender blossoms on fat spikes.

Linum perenne 'Saphyr Blue' is a flax for the hot sunny areas with small light blue flowers and ferny green leaves.

Lithodora 'Crystal Blue' has pale blue flowers over dark green flowers makes this an excellent groundcover.

Lithodora Gold 'n Sapphires displays deep blue flowers atop striking gold foliage.

Lithodora diffusa 'Grace Ward' has dark green foliage topped with masses of royal blue flowers.

Lithodora 'White Star' is a great ground cover for sunny positions with blue flowers centred with a white star.

Lobelia siphilitica has beautiful blue spikes popular with hummingbirds and butterflies.

Lobelia 'Fan Blue' has spires of dark blue and purple-blue flowers.

Lupinus arcticus is known as the Arctic or subalpine lupine. It has classic semi-open spikes of purple-blue and white flowers.

Lupinus latifolius or broadleaf lupine is native from BC to Baja California. It has beautiful flowers and is a larval host for butterflies.

Lupinus litoralis is known as the seashore lupine and is native to sandy sites along the coastline from BC to California.

Lupinus polyphyllus is known as the large-leaved or bigleaf lupine and is the main species of gardens.

Lupinus Westcountry 'Persian Slippers' is a magnificent lupin with bicoloured dusty blue and white flowers.