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Blue Perennial Plants

Showing 60 product(s)
Related Categories: Rockery Plants | Lithodora | Alpine Plants
  1. Nepeta Plants - Blue Moon

    Nepeta Plants - Blue Moon

    This first year flowering perennial boasts large, dense, pale blue flower spikes. It's early blooming, free flowering, and heat-tolerant. Soft, hairy, aromatic foliage. Flowers June-September. Height 45cm (18").…

    Despatch from June 2019 16 Value Plugs
  2. Scabiosa Plants - Blue Note

    Scabiosa Plants - Blue Note

    A compact front of border perennial producing a profusion of lovely bright blue pin-cushion flowers with frilly edge of the same colour on short stems over a long period. Flowers June-October. Height 20-30cm (8-12").…

    Despatch from April 2019 16 Value Plugs
  3. Nepeta Plants - Blue Moon Save 33%

    Nepeta Plants - Blue Moon

    A first-class perennial with large, dense, pale blue flower spikes. It's early blooming, free flowering, and heat-tolerant. Soft, hairy, aromatic foliage. Flowers June-September. Height 45cm (18"). Middle of border…

    Despatch from April 2019 3 x 9cm Potted Plants
    £12.00 Was £17.97
  4. Scabious Plants - Blue Note Save 33%

    Scabious Plants - Blue Note

    A compact front of border perennial producing a profusion of lovely bright blue pin-cushion flowers with frilly edge of the same colour on short stems over a long period. Flowers June-October. Height 20-30cm (8-12").…

    Despatch from April 2019 3 x 9cm Potted Plants
    £12.00 Was £17.97
  5. Agastache Plants - Blue Boa

    Agastache Plants - Blue Boa

    A great focal point to a perennial border and great for attracting wildlife. Bred for its massive flowers. with tall, showy, upright, violet-blue spikes, repeat-blooming over a long period. The cut fragrant foliage is also…

    Despatch from 29/04/2019 1 x 9cm Potted Plant
  6. Eryngium Plants - Blue Hobbit Save 37%

    Eryngium Plants - Blue Hobbit

    Small, thimble-like, rich blue flowers are surrounded by short spikes and carried on much-branched, short, blue stems that rise from a rosette of mid-green, oval leaves. Great for seaside garden, and the front of the…

    Despatch from May 2019 3 x 9cm Potted Plants
    £15.00 Was £23.97
  7. Penstemon Plants - Electric Blue

    Penstemon Plants - Electric Blue

    A fully hardy, low-growing penstemon producing multiple spikes of impressive electric blue flowers that are tinged with pink before opening fully. Flowers June-September. Height 45cm (18"). Middle of border variety.

    Despatch from April 2019 16 Value Plugs
  8. Penstemon Plants - Electric Blue Save 33%

    Penstemon Plants - Electric Blue

    A fully hardy, low-growing penstemon producing multiple spikes of impressive electric blue flowers that are tinged with pink before opening fully. Flowers June-September. Height 45cm (18"). Middle of border variety.…

    Despatch from April 2019 3 x 9cm Potted Plants
    £12.00 Was £17.97
  9. Agastache Plants - Liquorice Blue

    Agastache Plants - Liquorice Blue

    This first-class variety produces attractive, upright spikes of hooded rose-purple blooms that are a magnet for bees and butterflies. Flowers June-September. Height 60cm (24"). Supplied in 9cm pots.

    Despatch from April 2019 3 x 9cm Potted Plants
  10. Lupin Plants - Mini Gallery Bi-colour Blue

    Lupin Plants - Mini Gallery Bi-colour Blue

    Compact, bushy plants with a basal branching growth habit that ensures they produce a profusion of impressive flower spikes, in shades of bi-colour blue. It boasts a long flowering period for a lupin and will flower…

    Despatch from April 2019 1 x 9cm Potted Plant
  11. Nepeta Plant - Blue Moon

    Nepeta Plant - Blue Moon

    A first-class perennial with large, dense, pale blue flower spikes. It's early blooming, free flowering, and heat-tolerant. Soft, hairy, aromatic foliage. Flowers June-September. Height 45cm (18"). Middle of border…

    Despatch from April 2019 1 x 9cm Potted Plant
  12. Aubrieta Plant - Blue Beauty Save 33%

    Aubrieta Plant - Blue Beauty

    …covering perennial or alpine that is smothered in flowers in spring and into early summer. The plants create mounds of small foliage which can also trail over walls are covered with masses of flowers,…

    Despatch from March 2019 3 x 9cm Potted Plants
    £12.00 Was £17.97
  13. Aubrieta Plant - Blue Beauty

    Aubrieta Plant - Blue Beauty

    …covering perennial or alpine that is smothered in flowers in spring and into early summer. The plants create mounds of small foliage which can also trail over walls are covered with masses of flowers,…

    Despatch from March 2019 1 x 9cm Potted Plant
    From £5.99
  14. Scabious Plant - Blue Note

    Scabious Plant - Blue Note

    A compact front of border perennial, producing a profusion of lovely bright blue pin-cushion flowers with frilly edge of the same colour on short stems over a long period. Flowers June-October. Height 20-30cm (8-12")…

    Despatch from April 2019 1 x 9cm Potted Plant
  15. Eryngium Plant - Blue Hobbit

    Eryngium Plant - Blue Hobbit

    Small, thimble-like, rich blue flowers are surrounded by short spikes and carried on much-branched, short, blue stems that rise from a rosette of mid-green, oval leaves. Great for seaside garden, and the front of the…

    Despatch from May 2019 1 x 9cm Potted Plant
    From £7.99
  16. Penstemon Plant - Electric Blue

    Penstemon Plant - Electric Blue

    A fully hardy, low-growing penstemon producing multiple spikes of impressive electric blue flowers that are tinged with pink before opening fully. Flowers June-September. Height 45cm (18"). Middle of border variety.…

    Despatch from April 2019 1 x 9cm Potted Plant
  17. Lithodora Plant - Heavenly Blue

    Lithodora Plant - Heavenly Blue

    …evergreen, producing a succession of deep blue flowers over dark green foliage. RHS Award of Garden Merit winner. Flowers April-September. Height 15cm (6"). Early flowering variety. Supplied in a 9cm pot. Front of…

    Despatch from 22/04/2019 1 x 9cm Potted Plant
  18. Agastache Plant - Liquorice Blue

    Agastache Plant - Liquorice Blue

    This first-class variety produces attractive, upright spikes of hooded rose-purple blooms that are a magnet for bees and butterflies. Flowers June-September. Height 60cm (24"). Middle of border variety. Supplied in a 9cm pot.

    Despatch from April 2019 1 x 9cm Potted Plant
  19. Aquilegia Plants - Spring Magic Blue & White

    Aquilegia Plants - Spring Magic Blue & White

    A stunning variety with contrasting clear blue and white flowers and bright yellow stamens. The flowers of this Cottage Garden Classic delicately hang during spring showing the further detailing of the back of the flower…

    Despatch from April 2019 1 x 9cm Potted Plant
  20. Aquilegia Plants - Spring Magic Blue & White Save 33%

    Aquilegia Plants - Spring Magic Blue & White

    A stunning variety with contrasting clear blue and white flowers and bright yellow stamens. The flowers of this Cottage Garden Classicdelicatelt hang during spring showing the further detailing of the back of the flower…

    Despatch from April 2019 3 x 9cm Potted Plants
    £12.00 Was £17.97
  21. Delphinium Plant - Magic Fountains Dark Blue

    Delphinium Plant - Magic Fountains Dark Blue

    …semi-double blooms. Exceptionally good for cutting. A vigorous-growing strain, much more heat tolerant and less fussy than most other varieties. Flowers June-August. Height 90cm (36"); spread 40cm (16"). Supplied in a 9cm…

    Despatch from April 2019 1 x 9cm Potted Plant
  22. Lithodora diffusa Plant - Blue Star

    Lithodora diffusa Plant - Blue Star

    The most special blue flower! Space-filling, mini shrubs for borders and rockeries. Known for its long flowering period. Can be grown in the border or containers. Flowers April-September. Height 10-20cm. Supplied in a 9cm…

    Despatch from 22/04/2019 1 x 9cm Potted Plant
  23. Lupin Plant - Mini Gallery Pure Blue

    Lupin Plant - Mini Gallery Pure Blue

    Compact, bushy plants with a basal branching growth habit that ensures they produce a profusion of impressive flower spikes of pure blue. It boasts a long flowering period for a lupin and will flower in its first…

    Despatch from April 2019 1 x 9cm Potted Plant
  24. Scabious Plant - Fama Deep Blue

    Scabious Plant - Fama Deep Blue

    …produced all the way through summer and into early autumn. These compact varieties are perfect for the front of a border or in a patio container. Mid blue flowers on reasonably long stems. One of the largest flowers…

    Despatch from 29/04/2019 1 x 9cm Potted Plant
  25. Phlox subulata Plant - Spring Blue

    Phlox subulata Plant - Spring Blue

    This variety produces a showy display of blue, star-shaped flowers. Clip plants lightly immediately after blooming to encourage a dense habit. Wonderful in the sunny rock garden, for edging, or in mixed containers.…

    Despatch from March 2019 1 x 9cm Potted Plant
    From £5.99
  26. Delphinium Plant - Magic Fountains Sky Blue White Bee

    Delphinium Plant - Magic Fountains Sky Blue White Bee

    A vigorous growing variety producing light blue and white flowers that are more tranquil and being a slightly more compact form giving excellent garden performance on sturdy spikes. A cottage garden favourite. Ideal for…

    Despatch from April 2019 1 x 9cm Potted Plant
  27. Delphinium Plant - Magic Fountain Dark Blue White Bee Save 33%

    Delphinium Plant - Magic Fountain Dark Blue White Bee

    …which will produce tall, sturdy spikes of classic delphinium blooms which is more compact than many giving excellent garden performance. The dark blue and white flowers of this variety are very eye-catching/striking…

    Despatch from April 2019 3 x 9cm Potted Plants
    £12.00 Was £17.97
  28. Agapanthus Plants - Twister Save 37%

    Agapanthus Plants - Twister

    …A unique variety whose flowers have a deep blue base that shades to bright white at the tips. Deciduous. Hardy to -15°C. Flowers June/July-September. Height 50-60cm (20-24"). Supplied in 9cm pots.A real eye…

    Despatch from April 2019 3 x 9cm Potted Plants
    From £15.00 Was £23.97
  29. Aubrieta Plants - Mix

    Aubrieta Plants - Mix

    A selection of different coloured varieties producing a mass of flowers that provide early season colour in the garden. Supplied in a 9cm pot. Flowers April-May. Height 1-10cm. (Please note: Due to more aubrietas being blue

    9 x 9cm Potted Plants
    From £20.00
  30. Aubrieta Plants - Mix Save 33%

    Aubrieta Plants - Mix

    A selection of different coloured varieties producing a mass of flowers that provide early season colour in the garden. Supplied in 9cm pots. Flowers April-May. Height 1-10cm. (Please note: Due to more aubrietas being blue

    Delivery within 7 days 3 x 9cm Potted Plants
    From £12.00 Was £17.97
  31. Cosmos Plants - Capriola

    Cosmos Plants - Capriola

    …it blooms all summer. Try it with blue ageratum or in cut flower posies. Height 60cm (2).These traditional cottage garden favourites are perfect for all types of informal plantings. Use taller varieties at…

    Despatch from May 2019 15 Garden Ready Plugs
    From £9.99
  32. Cosmos Plants - Capriola Save 24%

    Cosmos Plants - Capriola

    …it blooms all summer. Try it with blue ageratum or in cut flower posies. Height 60cm (2).These traditional cottage garden favourites are perfect for all types of informal plantings. Use taller varieties at…

    Despatch from May 2019 30 Garden Ready Plugs
    From £14.99 Was £19.98
  33. Aubrieta Plants - Mix

    Aubrieta Plants - Mix

    …hardy plants, just right for the front of the border or your rockery.A selection of different coloured varieties producing a mass of flowers that provide early season colour in the garden. Supplied in a 9cm pot.…

    Despatch from January 2019 18 x 9cm Potted Plants
    From £25.00
  34. Aubrieta Plants - Mix

    Aubrieta Plants - Mix

    …hardy plants, just right for the front of the border or your rockery.A selection of different coloured varieties producing a mass of flowers that provide early season colour in the garden. Supplied in a 9cm pot.…

    Despatch from April 2019 16 Value Plugs
  35. Geranium Plants - Rozanne Save 37%

    Geranium Plants - Rozanne

    These reliable plants provide a long season of interest, not only with their wide variety of flower forms and colours, but also with their diverse range of attractive leaf shapes. They make excellent ground cover, forming…

    Despatch from May 2019 3 x 9cm Potted Plants
    From £15.00 Was £23.97
  36. Lotus Plants - Fire Vine

    Lotus Plants - Fire Vine

    …appear during the first summer, the plants will initiate more flower buds if lightly trimmed and kept in a bright, cool but frost free location during the winter and early spring and then planted out in a hot…

    Despatch from May 2019 6 Super Plugs
  37. Salvia Plants - New Dimensions Mix

    Salvia Plants - New Dimensions Mix

    Compact plants producing flower spikes in a combination of blue & purple/pink. Flowers June-September. Height 20-30cm (8-12"). Front of border variety.

    Despatch from April 2019 16 Value Plugs
  38. Salvia Plants - New Dimensions Mix

    Salvia Plants - New Dimensions Mix

    Compact plants producing flower spikes in a combination of blue & purple/pink. Flowers June-September. Height 20-30cm (8-12"). Front of border variety. Supplied in a 9cm pot.

    Despatch from April 2019 1 x 9cm Potted Plant
  39. Salvia Plants - New Dimensions Mix Save 33%

    Salvia Plants - New Dimensions Mix

    Compact plants producing flower spikes in a combination of blue & purple/pink. Flowers June-September. Height 20-30cm (8-12"). Front of border variety. Supplied in 9cm pots.

    Despatch from April 2019 3 x 9cm Potted Plants
    £12.00 Was £17.97
  40. Salvia Plants - Ballet Series Mix

    Salvia Plants - Ballet Series Mix

    A lovely colourful mix of white, pink, blue and velvet flowers which produce a long, repeat-flowering display throughout the season, from the first year. Flowers June-August. Height 40-50cm (16-20").

    Despatch from April 2019 16 Value Plugs
    From £9.99
  41. Salvia Plants - Ballet Series Mix Save 33%

    Salvia Plants - Ballet Series Mix

    A lovely colourful mix of white, pink, blue and velvet flowers which produce a long, repeat-flowering display throughout the season, from the first year. Flowers June-August. Height 40-50cm (16-20"). Supplied in 9cm pots.

    Despatch from April 2019 3 x 9cm Potted Plants
    From £12.00 Was £17.97
  42. Lupin Plants - Mini Gallery Mix

    Lupin Plants - Mini Gallery Mix

    Compact, bushy plants with a basal branching growth habit that ensures they produce a profusion of impressive flower spikes, in shades of red, pink, blue and yellow together with white. It boasts a long flowering…

    Despatch from April 2019 1 x 9cm Potted Plant
    From £5.99
  43. Lupin Plants - Mini Gallery Mix Save 33%

    Lupin Plants - Mini Gallery Mix

    Compact, bushy plants with a basal branching growth habit that ensures they produce a profusion of impressive flower spikes, in shades of red, pink, blue and yellow together with white. It boasts a long flowering…

    Despatch from April 2019 3 x 9cm Potted Plants
    From £12.00 Was £17.97
  44. Phlox subulata Plants - Spring White Save 33%

    Phlox subulata Plants - Spring White

    This variety produces a showy display of blue, star-shaped flowers. Clip plants lightly immediately after blooming to encourage a dense habit. Wonderful in the sunny rock garden, for edging, or in mixed containers.…

    Despatch from March 2019 3 x 9cm Potted Plants
    From £12.00 Was £17.97
  45. Streptocarpus Plant - Marion

    Streptocarpus Plant - Marion

    White and blue sport from Katie with all the same excellent qualities. Exceptionally long flowering season. Great for the show bench. Flower size 5cm+. Flowers early April-late October. Height 11-20cm. Tender perennial<…

    Despatch from April 2019 1 Super Plug Plant
  46. Perovskia atriplicifolia Plant

    Perovskia atriplicifolia Plant

    Commonly called Russian Sage, Perovskia atriplicifolia is an upright herbaceous perennial shrub. Light blue tubular flowers bloom over a long period from July until October and the grey-green leaves are aromatic,…

    Despatch from August 2019 3 Litre Potted Plant
  47. Saintpaulia Plant - Delft

    Saintpaulia Plant - Delft

    Semi-double cornflower blue flowers. Standard variety. Flowers January-December. Height 11-20cm. GP - Greenhouse perennial.

    Despatch from April 2019 1 Large Plug Plant
  48. Eryngium Plant - Neptunes Gold

    Eryngium Plant - Neptunes Gold

    Electric blue flowers surrounded by silver/gold bracts atop rich blue stems, contrast beautifully with golden-yellow leaves. Gorgeous spiky foliage and truly spectacular flower heads. Flowers July-September. Height…

    Despatch from 15/04/2019 1 9cm Potted Plant
  49. Agapanthus Plant - Twister

    Agapanthus Plant - Twister

    Unique blue-and-white flowers - can stay outside all year with no protection! A unique variety whose flowers have a deep blue base that shades to bright white at the tips. Deciduous. Hardy to -15C. Flowers June/July…

    Despatch from 22/04/2019 1 x 9cm Potted Plant
    From £7.99
  50. Saintpaulia Plant - Tula

    Saintpaulia Plant - Tula

    An older, but very beautiful variety. Large coral flowers with a sparkling rose-coloured overlay, a thin blue band and a distinct white edge. Standard variety. Flowers January-December. Height 11-20cm. GP - Greenhouse Despatch from April 2019 1 Large Plug Plant

  51. Saintpaulia Plant - Ae-Amur Elite

    Saintpaulia Plant - Ae-Amur Elite

    Semi-double white frilled flowers with pink patches and blue fantasy. Standard variety. Flowers January-December. Height 11-20cm. GP - Greenhouse perennial.

    Despatch from April 2019 1 Large Plug Plant
  52. Meconopsis Plant - Lingholm

    Meconopsis Plant - Lingholm

    …are not true poppies (Papaver). Commonly known as Himalayan Poppies, these magnificent and much admired perennials bear breathtaking poppy-like flowers. The short-lived. clump-forming plants are fully hardy…

    Despatch from May 2019 1 x 9cm Potted Plant
  53. Saintpaulia Plant - Favorite Child

    Saintpaulia Plant - Favorite Child

    Semi-double white ruffled flowers with medium blue edges. Medium green quilted foliage. Standard variety. Flowers January-December. Height 11-20cm. GP - Greenhouse perennial.

    Despatch from April 2019 1 Large Plug Plant
  54. Saintpaulia Plant - Podvenechnaia

    Saintpaulia Plant - Podvenechnaia

    This Russian variety means "Betrothed" and has single or semi-double pink to light violet flowers that have a white eye and edge and violet-blue fantasy. Standard variety. Flowers January-December. Height 11-20cm. GP - Greenhouse …

    Despatch from April 2019 1 Large Plug Plant
  55. Geranium Plant - Rozanne

    Geranium Plant - Rozanne

    …winner. Flowers June-October. Height 30cm (12"); spread 40cm (16"). Front of border variety.Adrian Bloom says . . . This amazing long-lived hardy geranium is so versatile, dramatic and long flowering, won many accolades…

    Despatch from 29/04/2019 1 9cm Potted Plant
    From £7.99
  56. Campanula Plant - Samantha

    Campanula Plant - Samantha

    A beautiful variety of the wonderful 'Bellflower', with fragrant mauve-blue, bell-shaped flowers on delicate stems, atop mounds of mid-green foliage. Ideal for the middle of a border or simply on its own in the patio container.…

    Despatch from 29/04/2019 1 x 9cm Potted Plant
  57. Saintpaulia Plant - Ness' Midnight Fantasy

    Saintpaulia Plant - Ness' Midnight Fantasy

    A free flowering jewel among saintpaulias. The semi-double light pink flowers show fascinating blue fantasy markings. Dark green foliage with a red back. Standard variety. Flowers January-December. Height 11-20cm. GP -…

    Despatch from April 2019 1 Large Plug Plant
  58. Phlox subulata Plant - Spring White

    Phlox subulata Plant - Spring White

    This variety produces a showy display of blue, star-shaped flowers. Clip plants lightly immediately after blooming to encourage a dense habit. Wonderful in the sunny rock garden, for edging, or in mixed containers.…

    Despatch from March 2019 1 x 9cm Potted Plant
    From £5.99
  59. Hosta Plant - Fire & Ice

    Hosta Plant - Fire & Ice

    …emerge from this gorgeous foliage from July- August. Hosta's love shade, and this striking variety will certainly brighten up a dark corner in either pot or border. RHS Award of Garden Merit winner. Flowers July-August.…

    Despatch from 29/04/2019 1 x 9cm Potted Plant
  60. Meconopsis Seeds - Lingholm

    Meconopsis Seeds - Lingholm

    Everyone loves the 'blue poppy' and Lingholm is the largest flowered variety of those available with teh deepest colour too. Easier to grow than other perennial poppies. Height 90cm (3'). HP - Hardy perennial.

    Delivery within 7 days Average Seeds 70
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