Vita Sementi® Italian Seeds, T&M, £50 - £100, Hardy, Blue

Buddleja davidii 'Wisteria Lane'

Long, deep lilac flower spikes hangdown with an unusual weeping habit, reminiscent of wisteria. This striking freestanding shrub is relatively compact, enhancing the back of a sunny border as well as a large container on the terrace. Wherever you plant it, 'Wisteria…  More Info

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

3 Options From£21.59

Hydrangea macrophylla 'Bela Collection'

These low growing dwarf Hydrangeas are perfect for filling patio pots! The rounded, mop head flowers are produced from July through to September in fabulous shades of rosy-red and blue.  More Info

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

4 Options From£28.79

Vinca minor

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
  

4 Options From£14.39

Hibiscus syriacus 'Blue Chiffon'

Stunning pale blue, double flowers are produced on this RHS AGM winning tree hollyhock. The centre of each flower has a neat swirl of smaller petals, making Hibiscus syriacus 'Blue Chiffon' extremely pleasing on the eye.  More Info

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

4 Options From£26.39

Lilac 'Katherine Havemeyer'

Making a glorious show of late spring colour, this beautiful Lilac has lavender-blue flowers and heart-shaped foliage. The colourful blooms of Syringa 'Katherine Havermeyer' are rich in nectar and attract butterflies to the garden. This is a fast growing variety which…  More Info

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

4 Options From£9.99

Hydrangea macrophylla 'Bodensee'

Awarded and RHS AGM for its garden performance, this impressive Californian Lilac makes a showy display. From May to June, Ceanothus 'Blue Mound' is smothered in masses of deep blue flower heads.  More Info

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

2 Options From£35.99

Buddleja 'Blue Chip'

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£20.39

Agapanthus 'Brilliant Blue'

Agapanthus 'Brilliant Blue' lives up to its name, with dazzling azure flowers, borne upon stiffly upright stems. The mid green, strap-like leaves form neat clumps of slender foliage that make superb ground cover when grown in dense groups. This exquisite African Lily is…  More Info

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

3 Options From£24.59

Rhododendron 'Blue Diamond'

This dwarf hybrid certainly has the 'wow? factor! Masses of bell-shaped, violet blue flowers smother Rhododendron 'Blue Diamond' in mid-spring. The blooms gradually fade to lavender blue as they age.  More Info

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

2 Options From£28.79

Clematis 'Guiding Promise'™ evipo053

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£35.99

Clematis Parisienne™ evipo019

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

2 Options From£28.79

Clematis Ice Blue™ evipo003

This repeat flowering variety erupts into bloom as early as May and continues well into the summer. When other plants are fading, Clematis 'Ice Blue' produces a second flush of flowers in early autumn, making it superb value for money.  More Info

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

2 Options From£28.79

Hibiscus syriacus 'Azurri'

If you ever needed confirmation that last is most definitely not least, then this is it. Hibiscus syriacus 'Belli Colori Azurri' is late to flower, for its blooms don't appear until August. However, the hardy shrub's jaw-dropping flowers with their lilac petals and…  More Info

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

2 Options From£27.59

Agapanthus 'Bluestorm'

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
  

4 Options From£28.79

Vitex agnus-castus 'Delta Blues'

Often mistaken for a buddleja, but Vitex is far more refined. This stunning deciduous shrub is cloaked in palmate, grey-green foliage which is gently aromatic. Vitex agnus-castus 'Delta Blues' produces branching sprays of dark purple-blue, fragrant flowers at the stem…  More Info

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

2 Options From£33.59

Agapanthus 'Golden Drop'

Unique golden edged leaved agapanthus introduced at the 2012 Chelsea Flower Show. Also one of the few compact varieties, the lovely pale blue flowers which appear in May to June suitable for cutting and are followed by decorative seed heads. Suitable as an individual…  More Info

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

4 Options From£35.99

Hydrangea serrata 'Intermedia' (Acuminata)

The compact size of Hydrangea serrata 'Intermedia' makes it the perfect plant for a large container. Also happy in the border in sun or part shade, this lacecap Hydrangea is covered in an abundance of very pretty flowers, each with a tight centre surrounded by pale pink…  More Info

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

4 Options From£19.19