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Home > 'Blue Perennials'

'Blue Perennials'

Delphinium 'Cobalt Dreams'

When it comes to delphiniums we know there is only one man to talk to about finding the next best thing - New Zealand breeder Terry Dowdeswell. He's outdone himself with Delphinium 'Cobalt Dreams'. This special selection produces the most perfect blue blooms you'll ever see, andMore Info

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Brunnera 'Alexander's Great'

* New in 2015If you are looking for a statement plant then try this big robust silver beauty! Easy to care for, the heavily silver-veined leaves will make a dramatic impact in borders and containers. Sprays of sky-blue flowers atop wirey stems will appear from spring.More Info

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Polemonium boreale 'Heavenly Habit'

Attractive clusters of violet-blue flowers, each with a distinct golden yellow eye, look divine against the bushy, deep green foliage. Their dwarf habit makes them idea! in the front of borders, or even containers. If deadheads are removed regularly, plants will continue to floweMore Info

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Scabious 'Blue Jeans'

An abundance of blue pincushion scabious flowers will attract bees and butterflies throughout summer. The tall, wiry stems can also be cut to create a pretty display indoors. Scabiosa 'Blue Jeans' blends well among cottage garden borders, where they look particularly effective plMore Info

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Meconopsis betonicifolia 'Blue'

Is there a more beautiful bloom in the entire flower kingdom then the famous Blue Poppy? It is only to be expected that an elusive, magical flower like this is a little harder to grow. The secret with this plant is to grow cool and well shaded. Height: 60-90cm (24-36in)More Info

Just£3.69

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Vinca major 'Variegata'

Vinca major 'Variegata' certainly lives up to its name, with outstanding evergreen variegated foliage; each deep green leaf features a fabulous contrasting creamy white margin. Also known as Variegated Greater Periwinkle, this plant is just as vigorous as Vinca minor but less aggMore Info

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Salvia patens

A classic border plant, ideal for adding a cool blue drift to your planting schemes. The attractive, large blue hooded florets are borne on erect stems above toothed foliage. First year flowering, blooms throughout the summer into autumn. Height: 45-60cm (18-24in)More Info

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Nepeta transcaucasica 'Blue Infinity'

Tall wands of violet-blue flowers in seemingly infinate quantity over a long period. With its characteristic aromatic fragrance it is extremely effective in the border, long-lived, easily grown and very reliable* Seed came to T&M under this name which is yet to be verifiedMore Info

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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 a real heMore Info

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Meconopsis betonicifolia 'Blue'

Meconopsis betonicifolia - a stunning blue Himilayan Poppy that will certainly make an impact on its own, let alone as part of this collection. The large bowl shaped blooms will have a dramatic effect and are certainly worth a place in your garden. Add some luxury to your borderMore Info

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Gentiana cruciata

This much-loved flower of the high mountains makes a great feature at home in a rockery, alpine border or a container. Gentiana cruciata bears its intensely blue flowers at the tips of short, 30cm (12) stems. This Crosswort Gentian is the easiest to grow of all the Gentian familyMore Info

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Agapanthus Blue & White Collection

This magnificent mix combines blue Agapanthus 'Queen of the Ocean' and white Agapanthus 'Polar Ice' for a striking two tone display. In summer, these impressive perennials lend their stature to borders and patio containers, where their architectural seed heads continue the displaMore Info

Just£6.00

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Commelina dianthifolia

A very rare plant indeed. This is one of the few plants with such intense blue flowers and that will also perform well in the garden. Flowering in its first year with 25cm (1in) gentian blue flowers, it then produces tubers and springs back to life the following year with an unceMore Info

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Aquilegia caerulea

Possibly the most beautiful Aquilegia of all. With glorious light to deep blue flowers 2-3in across sometimes fetching bi-coloured with white. An excellent border perennial, grand for cutting, in bloom for several weeks and will grow in sun or light shade. Flowers late spring/earMore Info

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Geranium bohemicum 'Orchid Blue'

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. Makes aMore Info

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Heteropappus meyendorfii 'Blue Knoll'

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 season whenMore Info

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Linum narbonense 'Heavenly Blue'

One of the finest blue flowered plants. A profusion of luminous ultra-marine blue flowersMore Info

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Viola sororia 'Freckles'

Viola sororia 'Freckles' is quite unlike any other variety, bearing violet-purple, speckled flowers from spring through into summer. These unusual blooms are held above neat clumps of deep-green, heart-shaped foliage. A memorable Violet, 'Freckles' self-seeds freely, dotting itsMore Info

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Tradescantia (Andersoniana Group) 'Mixed Colours'

Quick forming clumps of fleshy sword-like foliage and a succession of clustered blue, lilac and mauve flowers. Very hardy and trouble-free in the borderMore Info

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Eryngium alpinum 'Blue Lace'

A spectacular alpinum selection with impressive long lasting clear violet-blue terminal flower heads on stunning blue stems. Makes an eye-catching addition to any border, and an attractive cut flower. Height: 85cm (34in)More Info

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Phlox 'Bavaria'

Creeping Phlox are useful for dry, sunny banks and all those places that other plants just won't grow! Plants produce an impenetrable mat of fragrant flowers; suppressing weeds and resisting drought! The detailed eye on each gleaming white is also quite striking!More Info

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Tall Perennial Mix

Perennials will fill your borders with colour, grace and elegance for many years with the minimum of maintenance. Some will even flower in their first year. To help you make the most of your borders, we have grouped together varieties that can be sown in June or July by height toMore Info

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Strelitzia 'Bird of Paradise'

* New in 2015Admired for their exotic blooms which make vibrant, long lasting cut flowers. The stately blue green, deeply ribbed foliage makes an attractive foil for their magnificent flowers which resemble birds with bright plumage. The striking blooms will make for an impressivMore Info

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Campanula pyramidalis (Mixed)

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

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Iris 'Edith Wolford'

We cannot sing enough praise of this stunning bicoloured iris, with the harmonious combination of bicolour blue and yellow blooms, you'll enjoy up to nine buds per stem on this hardy perennial. And just when you think this stunning iris has done its thing for the season it will rMore Info

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Agapanthus 'Northern Star'

Agapanthus 'Northern Star' is very free flowering, forming masses of umbel flower heads all through summer. The stunning deep blue flowers have a purple stripe the same as the purple base of the semi-evergreen foliage. A tall African Blue Lily, ideal in the middle of your garden'More Info

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Perovskia atriplicifolia

Bushy and woody-based Russian Sage is a deciduous perennial that is very hardy and drought and heat tolerant. With finely divided grey-green foliage which emits a lovely aroma when lightly crushed, and the long terminal panicles of tiny blue flowers bloom in late summer and earlyMore Info

Just£19.99

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Geranium 'Rozanne'

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 the frontMore Info

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Hardy Geranium Collection

Collection comprises of 1 bare root plant each of Sanguineum, Sanguineum Album, Sanguineum Canon Miles, Sanguineum Max Frei, Sanguineum New Hampshire & himalayense. Plus, 100g of geranium fertiliser.More Info

Just£14.99

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Penstemon heterophyllus 'Electric Blue'

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 your garden.More Info

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Penstemon heterophyllus 'True Blue'

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, rockeries,More Info

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Meconopsis grandis

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

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Nepeta nervosa 'Blue Moon'

A neat, dwarf, bushy, habit, with large dense blue flower spikes, over a very long period. Quick to flower in 12-16 weeks from an April sowing. Ideal for borders and containers. Height: 30-40cm (12-16in)More Info

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Perennial Pack A 'T&M's Choice'

Fill your beds and borders with this bargain perennial collection. Perennial plants will bloom year after year and they can also be cut and brought into the house for beautiful flower arrangements. This collection includes the varieties Aquilegia 'Swan' Mixed, Carnation 'Ever-bloMore Info

Just£14.99

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Catananche caerulea

An easy to raise, free flowering plant for the front of the border. The brilliant sky blue flowers are freely produced and are excellent for cutting, lasting a long time in water. They can also be dried for winter decoration. Will flower the same year from a late winter sowing. FMore Info

Just£2.99

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