Blue Flowering Plants


Blue is the rarest colour in the garden, which is exactly why a genuine blue flower stops you in your tracks. These are the plants that bring it.

15 products

    15 products
    Brunnera macrophylla 'Silver Heart' 17cm / 2L Plants - Outdoor GROW TROPICALS
    Siberian Bugloss 'Silver Heart'

    Brunnera macrophylla 'Silver Heart'

    £14.99
    1
    Passiflora caerulea 15cm / 1.5L Plants - Outdoor GROW TROPICALS
    Blue Passion Flower

    Passiflora caerulea

    £14.99
    1
    Fascicularia bicolor 9cm / 0.5L Plants - Outdoor GROW TROPICALS
    Hardy Bromeliad (Crimson Bromeliad)

    Fascicularia bicolor

    £11.99
    1
    Brunnera macrophylla 'Jack of Diamonds' Plants - Outdoor GROW TROPICALS
    Siberian Bugloss 'Jack of Diamonds'

    Brunnera macrophylla 'Jack of Diamonds'

    £16.99
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    Eryngium bourgatii Plants - Outdoor GROW TROPICALS
    Mediterranean Sea Holly

    Eryngium bourgatii

    £13.99
    1
    Vitex agnus-castus 'Blue Diddley' 19cm / 3L Plants - Outdoor GROW TROPICALS
    Chaste Tree (Dwarf Chaste Tree)

    Vitex agnus-castus 'Blue Diddley'

    £24.99
    1
    Libertia sessiliflora 'Caerulescens' Plants - Outdoor GROW TROPICALS
    Chilean Libertia

    Libertia sessiliflora 'Caerulescens'

    £7.99
    1
    Wisteria sinensis 'Prolific' Plants - Outdoor GROW TROPICALS
    Chinese Wisteria 'Prolific' (Blue Wisteria)

    Wisteria sinensis 'Prolific'

    £30.99
    1
    Aristea ecklonii (Blue Stars) Plants - Outdoor GROW TROPICALS
    Blue Stars (Blue-eyed Iris)

    Aristea ecklonii (Blue Stars)

    £7.99
    1
    Myosotidium hortensia 19cm / 3L Plants - Outdoor GROW TROPICALS
    Chatham Island Forget-me-not

    Myosotidium hortensia

    £24.99
    1
    Dianella revoluta 'Blue Stream' Plants - Outdoor GROW TROPICALS
    Blue Flax Lily

    Dianella revoluta 'Blue Stream'

    £15.99
    1
    Dianella revoluta 'Coolvista' Plants - Outdoor GROW TROPICALS
    Blue Flax Lily

    Dianella revoluta 'Coolvista'

    £16.99
    1
    Agapanthus africanus Blue 17cm / 2L Plants - Outdoor GROW TROPICALS
    African Lily (Lily of the Nile)

    Agapanthus africanus Blue

    £14.99
    1
    Eryngium variifolium Plants - Outdoor GROW TROPICALS
    Moroccan Sea Holly

    Eryngium variifolium

    £13.99
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    Fuchsia Delta's Sarah 9cm / 0.5L Plants - Outdoor GROW TROPICALS
    Hardy Fuchsia, Delta's Sarah

    Fuchsia Delta's Sarah

    £4.99
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    Growing blue flowering plants

    True blue is unusual in nature, so most gardens have very little of it. That scarcity is the appeal. A drift of real blue reads as cool and calm, pushes the back of a border further away, and makes yellows and oranges sing when you plant them nearby.

    The plants here range from low, spreading types for the front of a bed to taller spires for the middle. Many prefer sun and open ground, though a few of the woodland kinds take some shade. Grouping several together gives the strongest effect, since blue can get lost when it is dotted about on its own.

    All grown for UK gardens and sent out well rooted.

    Frequently Asked Questions

    Genuinely blue flowers are less common than the photos online suggest, since many so-called blue plants lean purple. Each plant page here describes the real colour honestly so you know what you are getting.

    Most do best in an open, sunny spot, which brings out the strongest colour. A few woodland types tolerate part shade. Check the aspect listed on each plant.

    Blue and yellow is one of the most reliable pairings in gardening, each making the other brighter. Blue also cools hot borders and sits beautifully with silver foliage and white flowers.

    The ones here are chosen to cope with UK conditions. Hardiness varies by plant, so check the rating on each page if your garden is cold or exposed.