We have found 147 plants that meet your criteria.

annual clary
Salvia viridis 'Blue' annual clary Rich blue summer colour £1.99 Buy
New
viper's bugloss
Echium vulgare viper's bugloss Magnificent flowerspikes £2.49 Buy
New
harebell
Campanula rotundifolia harebell Very pretty in a meadow £2.49 Buy
New
cornflower
Centaurea cyanus cornflower A vivid blue annual for a meadow £2.49 Buy
cornflower
Centaurea cyanus 'Black Ball' cornflower Wonderful near-black flowers £2.49 Buy
viper's bugloss
Echium vulgare 'Blue Bedder' viper's bugloss Loved by bees and other pollinating insects £2.49 Buy
New
columbine
Aquilegia vulgaris columbine Looks good in most settings £2.99 Buy
Portuguese squill bulbs
Scilla peruviana Portuguese squill bulbs Very pretty and good for naturalising £2.99 coming soon
delphinium
Delphinium Pacific hybrids delphinium A lavish mix of colours £2.99 Buy
New
congested snake lily
Dichelostemma congestum congested snake lily An exotic-looking sun-lover £3.99 coming soon
allium bulbs
Allium caeruleum allium bulbs Beautiful globes of bright blue flowers £4.99 coming soon
false Indigo
Baptisia australis false Indigo Decorative seed-pods in winter £4.99 Buy
bog sage
Salvia uliginosa 'African Skies' bog sage A handsome back-of-border perennial £4.99 coming soon
hyacinth bulbs
Hyacinthus orientalis 'Blue Eyes' hyacinth bulbs Softest pale blue £4.99 coming soon
parrot tulip bulbs
Tulipa 'Blue Parrot' parrot tulip bulbs Luscious lavender-mauve petals £4.99 coming soon
New
delphinium
Delphinium 'Centurian Gentian Blue' (Centurion Series) delphinium Amazing flower colour £4.99 Buy
delphinium
Delphinium 'Centurion Gentian Blue' F1 delphinium Magnificent summer spires £4.99 Buy
'prepared' hyacinth bulbs
Hyacinthus orientalis 'Delft Blue' 'prepared' hyacinth bulbs Highly scented blue flowers for the home £4.99 coming soon
New
delphinium
Delphinium 'Guardian Blue (Guardian Series)' delphinium £4.99 sold out
New
lavender
Lavandula angustifolia Melissa Lilac ('Dow4') (PBR) lavender Large, lilac flowers in... £4.99 Buy