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Keeping you updated – Thompson & Morgan is operating as usual, working 24/7 to keep the country gardening. We are working closely with nurseries and growers to ensure that millions of plants are not wasted. Our site features many of these offers and we will add more every day, passing on these amazing deals to our customers.

Under £20, Blue, Apricot, Borders, Perennial

6344 products, 777 articles, 855 blogs

Campanula persicifolia 'Blue Bell'

19 Reviews

Campanula persicifolia 'Blue Bell' is a charming upright perennial, producing a summer display of slender, stems adorned with outward facing, bell-shaped blooms in a rich shade of blue. Campanulas are a well-loved addition to cottage garden borders, forming an evergreen…  More Info

  • Sun shade: sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

Just£9.99

by the end of may 2020

Out of Stock

Geranium pratense 'Cloud Nine'

19 Reviews

Touted as the best double-flowered cranesbill geranium ever seen, and having its debut at RHS Chelsea Flower Show this year, 'Cloud Nine' really is a spectacular specimen. Smothered in wonderful lilac blue, double flowers twice in the season - once at the beginning of…  More Info

  • Sun shade: sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

3 Options From£6.99

by the end of april 2020

Out of Stock

Meconopsis baileyi 'Blue'

7 Reviews

Is there a more beautiful bloom in the entire flower kingdom then the famous Blue Poppy? The large bowl shaped blooms will have a dramatic effect and are certainly worth a place in your garden.  More Info

  • Sun shade: dappled shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

3 Options From£7.99

within 21 working days

Out of Stock

Salvia Salgoon 'Lake McKenzie'

0 Reviews

Salvia Salgoon 'Lake McKenzie' is a new introduction that?s sure to be a hit with UK gardeners. A sublime display of indigo blue flowers are borne on black stems throughout the summer. The nectar-rich blooms are loved by pollinating insects.  More Info

  • Sun shade: full sun
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

Just£9.99

by the end of may 2020

Out of Stock

Pulmonaria 'Moonshine'

1 Review

When this showy Lungwort starts to flower, its a welcome sign that spring is on the way! Pulmonaria 'Moonshine' is a stunning, herbaceous perennial grown for its mound of sparkling, silvery-grey, rounded leaves that are edged with dark green.  More Info

  • Sun shade: sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£19.99

by the end of july 2020

Out of Stock

Meconopsis 'Union Jack' Collection

54 Reviews

We've put together a collection of these wonderful perennial poppy plants for you for a patriotic display in your summer border: Meconopsis Napaulensis, Meconopsis baileyi 'Alba' and Meconopsis baileyi.  More Info

  • Sun shade: Dappled shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£14.99

within 21 working days

Out of Stock

Pulmonaria 'Blue Ensign'

0 Reviews

An RHS AGM winner, Pulmonaria 'Blue Ensign' has clear blue flowers formed in clusters from March to May. Unlike many Lungwort cultivars, the green leaves of Pulmonaria 'Blue Ensign' don't have the typical pale spots and are broader and more refined, creating low…  More Info

  • Sun shade: Sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£11.99

within 14 working days

Out of Stock

Geranium sanguineum 'Pink Pouffe'

0 Reviews

Iris setosa 'Baby Blue' is a charming little Iris of petite proportions, reaching just 20cm (8) tall. Violet veins decorate the lavender-blue petals, which are splashed with white at the centre of each bloom.  More Info

  • Sun shade: sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£14.99

within 14 working days

Out of Stock

Penstemon heterophyllus 'Electric Blue'

2 Reviews

Intensely blue flowers with a tinge of purple contrast beautifully with the silvery green foliage of this hardy perennial. The long lasting blooms of Penstemon heterophyllus 'Electric Blue? appear from June through to October enticing plenty of pollinating insects to…  More Info

  • Sun shade: sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

3 Options From£11.99

by the end of may 2020

Out of Stock

Salvia 'African Sky'

0 Reviews

Exquisite sky-blue flowers crowd the upright stems of this magnificent perennial over a long period. The woody stems are cloaked in dark, aromatic foliage that makes a good contrast with its open-mouthed blooms.  More Info

  • Sun shade: full sun
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£16.99

by the end of june 2020

Out of Stock

Anemone 'Wild Swan'

2 Reviews

RHS Chelsea Flower Show 2011 Plant o f the Year winner. Developed over a 10 year period, this is a cross between early and late anemone types and as such, the unique flowers bloom from April right through to the autumn. The beautiful, blue-backed blooms can be…  More Info

  • Sun shade: Sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

Just£13.99

Out of Stock

Nepeta 'Neptune'

6 Reviews

Here's a wonderfully versatile perennial! Nepeta 'Neptune' works well planted in clumps on its own in a border or as a companion plant in a container.  More Info

  • Sun shade: sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£7.99

by the end of may 2020

Out of Stock

Agapanthus 'Seastorm'

0 Reviews
  • Sun shade: Sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£19.99

by the end of july 2020

Out of Stock

Eryngium 'Magical Blue Globe'

1 Review

Sea Holly makes a superb hardy perennial for hot, sunny borders. Thriving on gritty soils, they are tough, resilient and reliable. This variety boasts a compact habit, and attractive, sculpted foliage. The silvery stems are topped with domed flowers and surrounded by a…  More Info

  • Sun shade: full sun
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£9.99

by the end of may 2020

Out of Stock

Dianthus 'Peach Party'

0 Reviews

This gorgeous variety has been a real hit since it was recently introduced to the market, and with blooms in such a pleasing shade or peach-pink it?s easy to see why!  More Info

  • Sun shade: full sun
  • Grows in: Borders
  • Flower Colour: Apricot
  • Longevity: Perennial

Just£17.99

within 14 working days

Out of Stock

Salvia microphylla 'Blue Monrovia'

0 Reviews

Salvia microphylla 'Blue Monrovia' is a bushy, shrubby perennial. In mild areas it may remain evergreen, although generally considered a semi-evergreen where winters are harsh and the plants are given no protection. This pretty Sage forms an upright clump of small, grey…  More Info

  • Sun shade: full sun
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£19.99

by the end of july 2020

Out of Stock

Agapanthus 'Blue Ribbon'

7 Reviews

The starry, rich blue flowers of Agapanthus ?Blue Ribbon? form rounded flower heads in late summer. Each petal is marked with a violet-blue stripe that adds depth and interest to the display.  More Info

  • Sun shade: sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

Just£9.99

Out of Stock

Delphinium 'King Arthur'

1 Review

The stately flowering stems of Delphinium 'King Arthur' are bound to make a big impact on any planting scheme. Growing to an impressive height, the strong, upright stems are each topped with a densely-packed spire of vivid deep blue semi-double flowers for that big…  More Info

  • Sun shade: full sun
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

Just£8.99

Out of Stock

Scabious caucasica 'Goldingensis'

0 Reviews

Bred in 1887, Scabious caucasica 'Goldingensis' remains the largest flowered and richest blue of any Garden Scabious. A staple plant of cottage gardens, this striking hardy perennial is equally useful in cut flower gardens and wildlife areas, where the blooms attract…  More Info

  • Sun shade: full sun
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£8.99

within 14 working days

Out of Stock

Corydalis flexuosa 'Purple Leaf'

0 Reviews

Corydalis flexuosa 'Purple Leaf' makes an often admired, unusual garden plant. These Corydalis may look delicate, but they're pretty tough, and enjoy our cool English summers. Flowering can often last from late spring until mid-summer, effortlessly forming clumps in…  More Info

  • Sun shade: Dappled shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£9.99

Out of Stock

Veronica spicata 'Glory'

1 Review

Small in stature but big in impact! Veronica spicata 'Glory' produces lots of large purple-blue, upright flower spikes above neat clumps of foliage. Flowering in abundance from June to August, this herbaceous perennial is ideal for adding summer colour to the front of…  More Info

  • Sun shade: Sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

3 Options From£8.99

within 14 working days

Out of Stock

Perovskia atriplicifolia 'Little Spire'

4 Reviews

Smaller and more compact, this smaller variety of Russian Sage is a wonderful plant with all its larger cousins hardiness, and drought and heat tolerance, without taking up so much border space. Perovskia atriplicifolia 'Little Spire' has the advantage of looking great…  More Info

  • Sun shade: Full sun
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£14.99

within 14 working days

Out of Stock

Agapanthus 'Bluestorm'

0 Reviews

The flamboyant Agapanthus 'Bluestorm' is a neat and compact African Lily cultivar which reaches just 76cm (30), boasting more stems than traditional varieties and blooming through the summer for up to 3 weeks longer. The mass of soft violet flowers atop upright stems…  More Info

  • Sun shade: Sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

8 Options From£19.99

by the end of july 2020

Out of Stock

Agapanthus 'Jacaranda'

0 Reviews

Blooming from as early as June, Agapanthus 'Jacaranda' is a useful early flowering variety. Its showy umbels of blue flowers are beautifully striped with a darker blue, adding a height to herbaceous borders, where the sturdy upright stems will make a lovely focal point.…  More Info

  • Sun shade: Sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£17.99

within 14 working days

Out of Stock

Coleus 'Copa Collection'

0 Reviews
  • Sun shade: sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

3 Options From£9.99

by the end of april 2020

Out of Stock

Agapanthus 'Sweet Surprise'

0 Reviews

Agapanthus 'Sweet Surprise' sports umbels of pale blue flowers between late June and August. Each flower has a charming star-shape once opened fully and a dark blue stripe down the centre of each petal. With stiff, upright stems that rise above clumps of strap-like,…  More Info

  • Sun shade: Sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£17.99

within 14 working days

Out of Stock

Veronica gentianoides

0 Reviews

Upright spires of palest, china blue flowers are produced over a long period throughout summer. Veronica gentianoides is an elegant hardy perennial with glossy, dark green foliage that forms a dense carpet.  More Info

  • Sun shade: sun or semi shade
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Perennial

2 Options From£8.99

Out of Stock
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