Blue Perennials

Lavender Hidcote is one of the most useful plants you can grow in your garden, the pretty violet flower spikes can be dried to make aromatic... Learn More

Festuca glauca 'Elijah Blue' is a stunning ornamental grass with silver-blue needle like foliage, it forms dense clumps and can be grown in borders... Learn More

The Himalayan Geranium is an extremely versatile clump forming perennial smothered with beautiful large pale blue to lilac-colored flowers with... Learn More

Lavender Hidcote is one of the most useful plants you can grow in your garden, the pretty violet flower spikes can be dried to make aromatic... Learn More

Geranium Johnson's Blue is a beautiful perennial plant whose blue flowers are tinged with purple. Perfect as a flowering ground cover. This plant... Learn More

Tall spikes loaded with bright colourful flowers Learn More

Lavender Munstead is one of the most useful plants you can grow in your garden; the pretty violet flower spikes can be dried to make aromatic... Learn More

This pretty dwarf growing hardy Aquilegia or Columbines bloom with deep blue and white flowers on attractive silver grey clover-like foliage in... Learn More

Nepeta Racemosa Grog is a perennial with a beautiful purple bloom. The plant is ideal as a ground cover in a wide border. The average height the... Learn More

These unusual irises have elegant and delicate ruffled blooms on tall slender stems. It blooms with beautiful butterfly-like flowers in summer and... Learn More

Agapanthus are exotic looking plants perfect for growing in big patio planters or with low growing perennials in a sunny border. They produce... Learn More

Also known as Michaelmas Daisies these old favourites bloom from late summer into fall with lots of intense blue, long lasting, daisy-like flowers.... Learn More

Nepeta Six Hills Giant is one of the tallest catmints, its a vigorous bushy clump-forming perennial with masses of slender spikes of lavender-blue... Learn More

Hosta Blue Mouse Ears produces smooth, neat, blue-green leaves with a dull surface, the foliage is topped in midsummer by bell-shaped pale purple... Learn More

Nepeta faassenii Walker's Low is a purple-blue flowering catnip. Nepeta faassenii Walker's Low is a beautiful border plant that requires a sunny... Learn More

Aster alpinus are nice Asters for the border, rock gardens and for pots,... Learn More

Phlox 'subulata' Creeping Moss Phlox is an almost evergreen plant, which will spread over the years to create a vibrant carpet of colour in your... Learn More

Symphytum azureum also known as blue comfrey, or Caucasian comfrey makes an excellent potash fertilizer for tomatoes and potatoes. Just steep cut... Learn More

The Agapanthus africanus is a flowering tuberous perennial plant native to the Western Cape Province. The African agapanthus is found mainly on... Learn More

An exceptional annual plant, Blue Potato Plant features showy intense violet-blue flowers with yellow centers from late spring until fall.... Learn More

Aquilegia or Columbines produce fabulous shaped flowers which will be the talking point of your neighbours. The dainty blooms with elegant spurs are... Learn More

Iris sibirica deep blue begins blooming after the Bearded Iris has faded but before the Japanese Iris. They produce long lasting rich deep blue... Learn More

Phlox Emerald Cushion Blue is a creeping perennial that produces a colourful spring carpet of soft pastel blue- mauve hues from spring to early... Learn More

Campanula carpatica Blue Clips is a lovely ground covering plant with large bell blooms; if spent flowers are removed regularly it will continually... Learn More

A great plant for the sunny border, huge flowers in a lovely purple blue colour blooming early to mid summer with plenty flower stalks. Learn More

Campanula portenschlagiana's suitable for indoor and outdoor use. Campanula portenschlagiana is suitable for plants along the edges of the terrace... Learn More

This Aquilegia is a favourite amongst florists; ideal for your cottage garden or that extra special floral arrangement. They are hardy, grow in sun... Learn More

These graceful summer flowering Siberian Irises have elegant ruffled blooms on tall slender stems. They will thrive in almost any garden and are... Learn More

Brunnera macrophylla 'Jack Frost' is a deciduous garden plant that eventually grows to about 40 cm high and is preferably in partial shade. ... Learn More

Brunnera macrophylla 'Variegata' produces highly decorative heart shaped, variegated foliage in spring followed by sky blue forget-me-not like... Learn More

Enhance your garden with the Liriope muscari 'Majestic' in a 9cm pot, offering a vibrant touch with lush foliage. Learn More

Aster ageratoides Asran is a hardy, easy and reliable, spreading perennial producing clusters of lavender-blue daisies with yellow eyes with... Learn More

Ceratostigma plumbaginoides is a superb ground cover or edging plant for adding late colour to garden. In summer the red stems of this low... Learn More

Bugle is an excellent very versatile evergreen groundcover, suitable for planting under trees, at the front of a shady border or in containers for... Learn More

Aster ageratoides Strardust is a hardy, low maintenance and reliable, spreading perennial. In late summer it produces clusters of dark green... Learn More

Add great contrast, extended interest and bright colours to your summer garden with echinops Taplow Blue. This undemanding robust, upright... Learn More

A great plant for the sunny border, huge flowers in a lovely purple blue colour blooming early to mid summer with plenty flower stalks. Lupines are... Learn More

The Aster ´Lady in Blue´ has a compact habit and flowers in the period August-September with lavender flowers.... Learn More

These graceful summer flowering Iris sibirica Having Fun have ruffled sof lavender blooms on tall slender stems. They will thrive in almost any... Learn More

Iris sibirica Kaboom has wonderful dark purple ruffled blooms atop tall slender stems. Ideal for the partially shady garden, for by the... Learn More

Salvia uliginosa is an azure blue flowering perennial. Flowering occurs in the period August-September at a time when there are few really blue... Learn More

Get the Metal Blue Iris Combo from Gardens4you. This unique combination features Iris Germanica with elegant ruffled blue flowers accented by silver edges. Ideal for partially shaded gardens and large patio planters. Learn More