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Under £20, Blue

5506 products, 777 articles, 855 blogs

Geranium 'Rozanne'

81 Reviews

Winner of The RHS Chelsea Flower Show 'Plant of the Centenary'. A celebrated Cranesbill producing masses of saucer shaped, violet blue blooms with dainty white centres. Repeat flowering throughout the summer, hardy Geranium 'Rozanne' makes excellent ground cover through…  More Info

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

7 Options From£6.99

within 14 days

Lavender 'Munstead'

3 Reviews

Choose Lavender 'Munstead' as a neat edging to the border or path and enjoy its delicious scent as you brush past its aromatic foliage. In summer, the mass of dark purple-blue flower spikes are a lovely sight, and are particularly attractive to bees. They are perfect…  More Info

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

4 Options From£11.99

within 14 days

Agapanthus Duo Collection

34 Reviews

This magnificent mix combines blue Agapanthus 'Flower of love? and the first ever bicolour Agapanthus 'Twister' for a striking two tone display  More Info

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

3 Options From£9.49

within 14 days

Sollya heterophylla 'Ultra Blue'

0 Reviews

This new variety of Bluebell Creeper produces an abundance of dark azure blue flowers, far more vivid than the parent species. Sollya heterophylla 'Ultra Blue' has a better branching habit too, creating a denser appearance with more blooms.  More Info

  • Sun shade: full sun
  • Grows in: Walls & Fences
  • Flower Colour: Blue
  • Longevity: Shrub

3 Options From£15.99

Agapanthus africanus 'Twister'

85 Reviews

Here's a plant that will stand out from the crowd in your garden - the first ever deciduous bicolour agapanthus. This African lily is robust, and truly hardy in the UK meaning it's perfect in the garden border as well as in a patio container.  More Info

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

5 Options From£9.49

by the end of august 2020

Lavender 'Munstead'

1 Review

Neat, dwarf variety, strongly fragrant producing a prolific quantity of deep blue flowers. Perfect for hedging and cut flowers and ideal for drying. Flowers summer. Height: 30-60cm (1-2ft).  More Info

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

Just£2.99

Agapanthus 'Fireworks'

147 Reviews

For stunning, exotic looking blue and white blooms that burst at the end of tall stems like a fireworks in your flower bed, look no further than this amazing African Lily. An easy to keep variety that will get bigger and produce more flowers each year.  More Info

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

3 Options From£10.99

by the end of september 2020

Geranium bohemicum 'Orchid Blue'

13 Reviews

Geranium 'Orchid Blue' is a selection by Thompson & Morgan from the species Geranium bohemicum. A short-lived border and ground cover plant which self-seeds to keep continuity. Masses of 2cm (0.75in) flowers of orchid-blue, veined in purple-violet, borne on bushy plants…  More Info

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

Just£4.19

Lobelia erinus 'Blue Cascade'

2 Reviews

Freely branching plants are covered in myriads of bloom to create clouds of true blue lobelia flowers with a small white eye. Unsurpassable among trailing lobelias, 'Blue Cascade' makes a sparkling addition to containers, flower Pouches® and window-boxes. An easy to…  More Info

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

Just£2.49

Ceanothus thyrsiflorus var. repens

38 Reviews

Ceanothus Thyrsiflorus Repens (Californian Lilac) is perfect for the front of a border as it naturally forms a small mound that is evergreen and frost hardy. It is perfect for adding some structure and ground cover to cottage gardens and prefers a position in rich…  More Info

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

7 Options From£7.99

within 14 days

Nepeta 'Six Hills Giant'

1 Review

The ever popular Nepeta 'Six Hills Giant' is one of the most commonly grown Catmints. The lilac-blue lavender-like flower spikes rise above the silvery-green foliage from early summer onwards, giving a delightful summer display, that is ideal for softening borders and…  More Info

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

3 Options From£9.99

within 14 days

Agapanthus 'Ever Sapphire'

4 Reviews

Agapanthus 'Ever Sapphire? is a semi-dwarf variety which produces multiple spikes of bright blue flowers all summer in a sunny or partly shaded position. Agapanthus are tough, fast growing and drought tolerant, these plants are a real 'must-have? for any style of garden…  More Info

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

2 Options From£9.49

Eryngium planum 'Blue Hobbit' (Garden Ready)

26 Reviews

Eryngium 'Blue Hobbit' is an unusual and striking plant with sprays of spikey electric blue flowers, with up to 100 on each plant. They are very adaptable and can grow in various types of soil, and also in patio containers. As a dwarf variety it has a compact habit that…  More Info

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

Just£12.99

by the end of september 2020

Rosemary 'Roman Beauty'

2 Reviews

Rosemary bushes are instantly recognisable for their silvery stems and aromatic, dark green foliage. This variety has a charming arching habit that gives it a dense, uninhibited appearance.  More Info

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

3 Options From£14.49

within 14 days

Buddleja 'Blue Chip'

9 Reviews

Buddleja 'Blue Chip' is covered in scented flowers from June to October, attracting butterflies to your garden in droves. This Butterfly Bush variety is extremely compact and won't seed about your garden. This hardy deciduous shrub is ideal for borders, low hedges and…  More Info

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

5 Options From£16.99

within 14 days

Hebe 'High Voltage'

7 Reviews

Hebes offer impact and structure in the garden for minimum effort. We've selected this slow-growing, compact variety for its stand out summer flower spikes, which transform from electric blue to pure white. Hebe 'High Voltage' performs perfectly in large pots or out in…  More Info

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

2 Options From£9.49

by the end of august 2020

Morning Glory 'Heavenly Blue'

6 Reviews

Gorgeous sky blue flowers, up to 6cm (2.5in) across that open in the morning, appear throughout summer on this free-flowering, elegant climber. Also suitable for greenhouse or conservatory growing. Prefers a sunny, sheltered, warm site; Beautiful climber ideal for warm…  More Info

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

2 Options From£1.00

Lavender 'Ellagance Sky'

8 Reviews

A stunning first year flowering Lavender with large, attractive, fragrant, sky-blue spikes on strong stems, reaching out from bushy well branched plants. A long lasting addition to borders or containers, attracting bees and butterflies to your garden. Height: 30-35cm …  More Info

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

Just£1.00

Meconopsis grandis

7 Reviews

Sturdy and long-lived with huge flowers 10-12cm (4-5in) across in a wonderful blue, shot with violet on erect stems  More Info

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

Just£3.99

Clematis 'New Love'

49 Reviews

This fabulous herbaceous Clematis has a self supporting, bush forming habit that is perfect for bulking up perennial borders with vigorous clumps of dense foliage. The star-shaped, indigo blooms of Clematis 'New Love' have slender, reflexed petals and a lovely sweet…  More Info

  • Sun shade: Sun or semi shade
  • Grows in: Walls & Fences
  • Flower Colour: Blue
  • Longevity: Perennial

5 Options From£15.99

by the end of august 2020

Lavender 'Dwarf Blue'

0 Reviews

The perfect choice for a smaller space, this neat and compact, bushy Lavender ?Dwarf Blue? is ideal for growing in a patio pot or narrow beds. Little in size but big in terms of interest, you can enjoy fabulous bee friendly blooms through the summer months.  More Info

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

2 Options From£8.49

by the end of september 2020

Coleus 'T&M Prize Strain Improved Mixed'

0 Reviews

The sheer joy of this mixture is the wide and multiple colour range. It gives you so many different pot plants from one packet of seed and they couldn't be easier to grow. Superb house or greenhouse pot plant. Bedding plants for warm but shady positions. Height 45cm …  More Info

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

Just£2.99

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£15.59

Campanula pyramidalis (Mixed)

3 Reviews

One of the most striking perennials for the border or patio containers. Giant, slender spikes of blooms reach skywards, in shades of blue and white. Plant in containers either side of your front door for a colourful box or bay tree substitute!  More Info

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

Just£2.99

Phlox drummondii 'Moody Blues'

3 Reviews

An easy to grow half hardy annual and cottage garden classic, freely flowering in a broad range of attractive blue shades throughout the summer. Its compact bushy habit makes it ideal for planting as drifts of colour, as border edging or in containers  More Info

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

Just£1.99

Penstemon heterophyllus 'True Blue'

2 Reviews

Yes, this really is a true blue Penstemon, true from seed! Azure blue trumpet blooms in abundance, with green and grey tinged foliage. An added bonus too - as this charming perennial may be treated as a annual, flowering in its first year. Highly versatile for borders,…  More Info

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

Just£2.99

Hibiscus syriacus 'Marina'

0 Reviews

Of all the hardy Hibiscus, it is the blue varieties that look the most exotic. Wide trumpet-shaped blooms are borne from July to September when other plants are beginning to fade.  More Info

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

Just£12.99

Agapanthus Duo Fireworks & Poppin Purple

0 Reviews

This superb duo of African Lilies brings together two exciting varieties. The bicolour blooms of Agapanthus ?Fireworks? compliment the dark blooms of Agapanthus 'Poppin' Purple' to perfection. Their rounded flower heads rise above neat clumps of narrow, strap-like…  More Info

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

2 Options From£16.99

by the end of september 2020

Ceanothus x delileanus 'Gloire de Versailles'

11 Reviews

Ceanothus Delilianus Gloire De Versailles (Californian Lilac) is a lovely bushy shrub that is covered in powder-blue flowers from July to September. This tough plant with a prestigious RHS AGM, is very low maintenance and fast growing only requiring a hard prune in…  More Info

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

5 Options From£11.99

within 14 days

Cornflower 'Jubilee Gem'

4 Reviews

Dense heads of large, double flowers of a beautiful deep blue are freely produced on compact, bushy plants. Once a common sight in cornfields the annual cornflower stills creates a big impact in summer borders and meadows. The intensely coloured blooms of blue…  More Info

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

Just£2.29

Myosotis sylvatica 'Blue Ball'

2 Reviews

Compact and ball shaped with bright blue flowers.  More Info

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

Just£2.29

Vinca minor

0 Reviews

If you are looking for a plant that will bloom all summer long, then look no further than Lesser Periwinkle. One of the most resilient plants that you can buy, this vigorous, low grow shrub will grow happily in nearly any garden position, from full sun to dark, shady…  More Info

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

7 Options From£11.99

by the end of october 2020

Rosemary

6 Reviews

Essential with roast lamb, the dark green aromatic foliage of rosemary has a multitude of culinary uses. This shrubby evergreen is ideal for a sunny herb garden and even survives in poor soils, requiring very little maintenance. Height and spread: 150cm (59).  More Info

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

Just£2.29

Agapanthus 'Full Moon'

0 Reviews

Agapanthus are perfect for adding structure and colour to borders in summer. Their upright stems and rounded flower heads rise above clumps of strappy, dark green foliage.  More Info

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

2 Options From£16.99

within 14 days

Coleus 'Palisandra'

7 Reviews

Almost certainly the purest and deepest colour in existence. Lush, rich, broad leaves, like velvet, lightly serrated and nearly black in colour. Superb mixed with summer patio container plants  More Info

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

Just£1.79

Delphinium grandiflorum 'Summer Nights'

3 Reviews

Attractive dwarf plants covered in a blanket of dainty midnight-blue flowers. Flowering in their first year from sowing makes them perfect for bedding borders or containers, providing a colourful display over a long summer period  More Info

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

Just£2.39

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