Blue Flowers

The garden's most coveted colour — a curated palette of true-blue flower seeds, from sky-blue cornflowers to towering delphiniums. Loved by bees and beautiful in bouquets.

Best selling Best selling
  • Floss Blue Mink seeds (Ageratum houstonianum) – annual flower Floss Blue Mink (Ageratum houstonianum) – annual flower seeds from SeedsChoice
    Floss Flower Seeds Ageratum Houstonianum Annual Blue Mink
    $6.00

    Blue Mink annual color for borders Floss flower seeds are an excellent choice for gardeners who want a neat, low-growing annual with soft, blue-toned blooms. This Blue Mink type forms compact plants that suit a...
  • Larkspur Dasante Blue seeds (Delphinium belladonna) – biennial Larkspur Dasante Blue (Delphinium belladonna) – biennial seeds from SeedsChoice
    Delphinium Seeds Larkspur Delphinium Belladonna Biennial Dasante Blue
    $9.00

    Delphinium seeds for Dasante Blue garden color Delphinium seeds ‘Dasante Blue’ are a striking choice for gardeners looking for electric blue delphinium flowers with subtle purple accents. This compact delphinium variety develops upright flower spikes...
  • Trailing Sapphire seeds (Lobelia erinus) – annual Trailing Sapphire (Lobelia erinus) – annual seeds from SeedsChoice
    Trailing Lobelia Seeds Lobelia Erinus Sapphire Annual
    $6.00

    Trailing Lobelia Sapphire for Cascading Summer Colour trailing lobelia seeds are a popular choice for creating a soft, flowing edge of blue-purple lobelia flowers in containers and borders. This annual lobelia flower is known for...
  • Forget Me Not Blue seeds (Myosotis alpestris) – biennial flower Forget Me Not Blue (Myosotis alpestris) – biennial flower seeds from SeedsChoice
    Forget Me Not Seeds Myosotis Alpestris Biennial Blue Flowers
    $6.00

    Classic blue blooms for borders and rockeries forget me not seeds are a popular choice for creating soft, sky-blue spring colour with a natural, cottage-garden look. This biennial flower produces many small blossoms with bright...
  • Passion Climber seeds (Passiflora caerulea) – perennial climber Passion Climber (Passiflora caerulea) – perennial climber seeds from SeedsChoice
    Passiflora Caerulea Seeds Passion Flower Perennial Climber
    $6.00

    Perennial passion flower climber for gardens passiflora caerulea seeds produce a perennial climbing plant valued for its striking, intricate blooms and vigorous, twining habit. Often searched as blue passion flower seeds, this flowering vine is...
  • Phacelia Seeds Organic Phacelia Tanacetifolia Annual Flowers seeds (Phacelia tanacetifolia) – organic annua… Phacelia Seeds Organic Phacelia Tanacetifolia Annual Flowers (Phacelia tanacetifolia) – organic annual flow…
    Phacelia Seeds Organic Phacelia Tanacetifolia Annual Flowers
    $6.00

    Organic annual blue flowers for borders and pots Phacelia seeds are a popular choice for gardeners who want fast growing annual flowers with a soft, airy look. This organic flower variety produces masses of blue...
  • Crystal Palace seeds (Lobelia erinus) – annual Crystal Palace (Lobelia erinus) – annual seeds from SeedsChoice
    Lobelia Seeds Crystal Palace Lobelia Erinus Annual
    $6.00

    Crystal Palace annual lobelia for vivid edging lobelia seeds ‘Crystal Palace’ are a classic choice for creating a neat, low carpet of intense blue flowers in seasonal displays. This compact annual is widely used as...

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What to Sow Now — August

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Blue flower seeds — the garden's most coveted colour

True blue is the rarest and most sought-after colour in the flower garden, and this collection gathers the best blue-flowering varieties from across our flower seed range — from sky-blue cornflowers to deep delphinium spires. New to flowers? Our flower growing guide covers the basics.

Sow at the right time for the longest display — the calendar shows when.

Blue flowers to grow

For classic blues, sow cornflowers and the misty blooms of nigella (love-in-a-mist); for height and drama, the tall spires of delphinium; and for a soft haze, dainty forget-me-nots. Many true-blue flowers are also bee favourites, since bees see blue especially well.

Designing with blue

Blue is a cool, calming colour that recedes into a border and makes a garden feel larger. Pair it with yellow or orange for a vivid contrast, or with white and silver foliage for a serene, classic scheme. Blue flowers are lovely in the vase too, cooling down a bright bouquet.

Planning a colour scheme? Here's where to look next.

Popular flower categories: Cornflower · Nigella · Delphinium · Forget-Me-Not · Pollinator Flowers

At SeedsChoice, every order ships from Meppel, NL with fast, tracked EU delivery.

Frequently Asked Questions

Which flowers come in true blue?
Cornflower, delphinium, nigella, forget-me-not, morning glory and lobelia are among the best true blues.

Is true blue rare in flowers?
Yes — genuinely blue blooms are uncommon in nature, which is part of why they are so prized.

Do bees like blue flowers?
Yes — bees see blue especially well, so many blue flowers are excellent for pollinators.

How do I use blue in a border?
Pair it with yellow or orange for vivid contrast, or with white and silver for a calm, classic scheme.

When do I sow blue flowers?
It varies by variety — check the flower sowing calendar for each type.