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Half-hardy, Blue, Borders

6344 products, 777 articles, 855 blogs

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

Lobelia erinus 'Crystal Palace'

4 Reviews

Dainty, deep blue lobelia flowers smother neat globes of foliage that form very dwarf, compact plants. Lobelia 'Crystal Palace' makes a sparkling addition to beds, containers, flower Pouches® and window-boxes, and even looks well placed in the rockery. An easy to…  More Info

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

Just£2.49

Lobelia erinus 'Cambridge Blue'

0 Reviews

A compact variety that holds an RHS AGM for its excellent garden performance. Clear sky-blue lobelia flowers are set above narrow, airy foliage on compact plants. Lobelia 'Cambridge Blue' makes a sparkling addition to beds, containers, flower Pouches® and window…  More Info

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

Just£2.49

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

Lobelia pendula 'Sapphire Cascade'

3 Reviews

A rich, shining blue lobelia, producing a cascade of flowers over a long period, that rarely fade in even the brightest of sunshine. Trailing lobelia 'Sapphire Cascade' makes a sparkling addition to containers, flower pouches™ and window-boxes. An easy to grow…  More Info

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

Just£2.69

Salvia farinacea 'Seascape Mixed'

3 Reviews

A relaxing blend of three varieties of salvia with stunning flower spires in shades of blue with silver. These compact, branching and early flowering salvias will add a wonderful new dimension to bedding displays as they sway in the slightest breeze creating a truly…  More Info

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

Just£1.99

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

Morning Glory 'Hazelwood Blues'

3 Reviews

The stunning colour mixture of Ipomoea Hazelwood Blues brings together some of the most attractive shades of blue available in Morning Glories. This is a truly vigorous annual climber, ideal for covering fences, trellis or an ornamental garden arch. Ipomoea Hazelwood…  More Info

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

Just£2.29

Laurentia 'Avant-Garde Blue' F1 Hybrid

11 Reviews

T&M's flower breeders have struck gold with the first ever F1 Hybrid Laurentia to be entered into the Fleuroselect trials. Both 'Avant-Garde Blueand 'Pinkhave the same uniform, vigorous plant habit and have earlier scented, star shaped blooms which are produced in…  More Info

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

Just£2.99

Ageratum houstonianum 'Blue Mink'

5 Reviews

This relatively old variety of flossflower remains popular for good reason. The compact, uniform plants bear large, fluffy, powder-blue flowers. With a vigorous, open habit, Ageratum houstonianum 'Blue Mink' is perfect for adding texture and colour to bedding, borders…  More Info

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

Just£1.00

Lobelia erinus 'Mrs Clibran Improved'

2 Reviews

Very useful for edging. Deep-blue flowers with a pretty, contrasting white eye  More Info

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

Just£2.29

Morning Glory 'Heavenly Blue'

0 Reviews
  • Sun shade: full sun
  • Grows in: Borders
  • Flower Colour: Blue
  • Longevity: Annual

Just£2.99

Morning Glory 'Flying Saucers'

0 Reviews

A free-flowering vigorous climber for quickly covering trelliswork, obelisks and fences. In summer, an abundance of exquisite white blooms with blue-mauve streaks are produced, their antique appearance giving an air of yesteryear. Climbs to 180-240cm (6-8ft)  More Info

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

Just£1.00

Ageratum houstonianum 'Blue Danube' F1 Hybrid

2 Reviews

A large-flowered, vigorous variety of annual ageratum with powder-puff flower heads of soft, lavender blue. The fluffy, weather resistant blooms are particularly attractive to butterflies. With a dense, compact habit, Ageratum houstonianum 'Blue Danube' is perfect for…  More Info

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

Just£3.49

Heteropappus meyendorfii 'Blue Knoll'

8 Reviews

Seed of this amazing new garden plant can be sown early in the year* and by the same autumn will be completely smothered in hundreds and thousands of shiny, light reflecting flowers, forming perfect mounds (or knolls) 30cm (12in) high and 45cm (18in) across. During a…  More Info

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

Just£1.49

Mr. Men™ Little Miss™ Salvia patens

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

Just£2.99

Morning Glory 'Mini Sky Blue'

0 Reviews

Create a cool and tropical screen on your patio with this dazzling annual climber. Compact in size, it's the perfect choice for a small space.  More Info

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

Just£2.49

Lobelia 'Monsoon'

92 Reviews

Patio pots, baskets and beds simply aren't complete without lobelia - it's an essential for summer colour. Superb, trailing plants become smothered in sparkly blue flowers. Great value when bought as young plants  More Info

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

5 Options From£5.99

by the end of april 2020

Out of Stock

Osteospermum 'Erato Double Ice Blue'

11 Reviews

The flowers of this new double African daisy are almost electric! Osteospermum erato 'Double Ice Blue? has nearly white single petals which contrast with the blue-edged double centre to create a truly eye-catching display of spectacular colour.  More Info

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

2 Options From£8.99

by the end of april 2020

Out of Stock

Coleus canina 'Scaredy Cat'

59 Reviews

The neat grey-green leaves and small pale blue flowers make this half-hardy perennial an attractive addition to borders and containers. At it?s most effective when grown in full sun and when fully established, Coleus canina 'Scaredy Cat? is undemanding and surprisingly…  More Info

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

2 Options From£9.99

by the end of april 2020

Out of Stock

Laurentia 'Indigo Stars'

6 Reviews

Exceptionally long-flowering laurentia is perfect for both containers and bedding. Drought tolerant and generally resilient, new 'Indigo Starsis a deeper-coloured selection and its compact habit makes it ideal for pots.  More Info

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

2 Options From£13.99

by the end of april 2020

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

Ageratum 'High Tide'

4 Reviews

This strong growing variety has a dense, upright habit that makes this a fabulous annual for filling gaps in summer beds, borders and containers. Large, fluffy, blooms sit like powder-puffs above the bushy foliage, withstanding our variable summer weather with ease.  More Info

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

2 Options From£9.99

by the end of april 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
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