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Browse Plants

Narrowed By:Type: Perennials+ Zone: 9+ Uses: Container+ Flower Color: Blue
Displaying 1 - 16 of 16 listings   Sort By: Sort
Ajuga reptans 'Black Scallop' Ajuga reptans 'Black Scallop'
('Black Scallop' bugleweed)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Black foliage and spiky blue flowers (which appear in early summer) make a dramatic contrast. 'Black Scallop' thrives in full sun, which intensifies the black color. In full sun, the plant produces numerous runners, which should be thinned to prevent crown rot. In large plantings, you can run a rotary mower with a bagger attachment over the patch to control crowding and keep the foliage fresh. In mixed container plantings, the spilling habit of the plant makes it a standout choice. -Ron Smith, Regional Picks: Upper Plains, Fine Gardening issue #120

Brachycome 'Blue Zephyr' Brachycome 'Blue Zephyr'
(Swan River daisy)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Swan River daisy's lacy foliage and small but profuse blue-purple flowers have a long season of impact in the garden. Its compact, bushy shape, pretty fragrant flowers, and gray-green leaves make it attractive from planting time through frost. It flowers so heavily that the foliage is often obscured. 'Blue Zephyr' has especially fine foliage and only reaches about a foot high. It is excellent in hanging baskets, window boxes, or other containers, or at the front of a bed or border.

Clematis integrifolia Mongolian Bells™ Clematis integrifolia Mongolian Bells™
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Clematis integrifolia is no longer only blue. This selection produces progeny with pink, white, and lavender blooms from midspring until late summer. The flowers are followed by attractive seed heads in fall. It has a compact, herbaceous form and grows to just 10 to 14 inches tall.

Geranium pratense 'Dark Reiter' Geranium pratense 'Dark Reiter'
('Dark Reiter' geranium)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

'Dark Reiter', a fairly new cultivar, has a short mounded habit and dissected dark leaves. Bright lilac-blue blossoms appear in spring, and trimming the plant back after flowering encourages more blooms in fall and helps maintain its neat habit. 'Dark Reiter' is slow growing, making it perfect for a rock garden. Like many other geraniums, it does not appeal to deer. Pair silver-toned foliage plants with 'Dark Reiter' for a stunning effect. -Teresa Smith, Regional Picks: Northeast, Fine Gardening issue #120

Myosotis sylvatica Myosotis sylvatica
(Forget-me-not)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This short-lived perennial or biennial has ovate to lance-shaped, velvety gray-green leaves to 4.5 inches long. Myriad saucer-shaped blue or white flowers with yellow eyes are borne in clusters from spring to early summer.

Pulmonaria 'Silver Shimmers' Pulmonaria 'Silver Shimmers'
('Silver Shimmers' lungwort)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This eye-catching perennial has silver-plated leaves with speckled margins. Its blooms are among the largest of all lungworts, beginning as pink buds and opening in early spring to display platinum blue flowers.

This plant will eventually form a decent-sized mound that resembles a mountain of liquid silver. It's perfect in a woodland border and makes a great ground cover and container plant. In mild winters, its leaves may stay evergreen.

Ruellia brittoniana 'Purple Showers' Ruellia brittoniana 'Purple Showers'
(Mexican petunia, Common ruellia, Wild petunia)
(7 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This three-foot-tall evergreen shrub bears many tubular, blue or purple, petunia-like flowers on dark stems over a long period. Each flower lasts for just one day. It is a fast grower that may self-seed aggressively. Use in a border, container, or at waterside. Can be grown as an annual in cooler areas.

no image available Salvia 'Mystic Spires Blue'
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Throughout the summer, 'Mystic Spires Blue' produces long stalks of dark blue flowers, which continue to reward in abundance when deadheaded. Refresh tired plants in midsummer by cutting them back by half. This cultivar makes an excellent bedding or container plant.

Salvia chamaedryoides Salvia chamaedryoides
(Germander sage, Mexican blue sage)
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This choice species boasts narrow, downy sage-green leaves and true sky-blue blossoms from summer to fall. It has woody stems and forms a beautiful specimen 12 inches tall by 18 inches wide.

Salvia farinacea Salvia farinacea
(Mealycup sage)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This perennial forms a shrubby upright clump 2 feet tall by 1 foot wide, with white mealy stems and glossy green leaves. It bears deep, lavender-blue flowers on tall spikes from early summer to frost. Salvias are some of the showiest plants for containers, annual borders, and mixed borders. Butterflies and hummingbirds love them. 

Salvia farinacea 'Victoria' Salvia farinacea 'Victoria'
(Mealycup sage)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This compact perennial forms a bush less than 1.5eet tall by 1 foot wide, with indigo stems and glossy green leaves. It bears deep, navy blue flowers on medium spikes from early summer to frost.

Salvia mexicana 'Limelight' Salvia mexicana 'Limelight'
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This unusual tender perennial displays an electric color combination when its vibrant purple-blue flowers open from bright chartreuse calyces.  Fortunately, glossy, bright green leaves hold their own until the show gets started in August (and continues until frost). It forms a tall bush, 6 feet tall by 6 feet wide, which is great for the back of the border. Salvias are some of the showiest plants for containers, annual borders, and mixed borders. Butterflies and hummingbirds love them. 

Trachelium caeruleum Trachelium caeruleum
(Blue throatwort)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This species bears dome-shaped flower heads several inches across that are crowded with tiny, tubular amethyst or white flowers that look somewhat like the blooms of an allium. It has lance-shaped, toothed leaves in hues of cordovan purple or deep green brushed with plum highlights. It blooms over a long season. Though it is a perennial, blue throatwort performs wonderfully as an annual and blooms summer to fall. Plants grow to about 3 feet tall and wide.

Vinca major 'Variegata' Vinca major 'Variegata'
(Variegated greater periwinkle, Variegated bigleaf periwinkle)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Great for brightening up a shady spot, this ground-hugging, evergreen, trailing groundcover has dark green leaves with yellowish-white edges. Its texture is coarser than V. minor. This plant grows to 18 inches and spreads indefinitely. Blue flowers appear in spring. It can be used as an annual in cold climates. It is not quite as hardy as the popular Vinca minor and is not quite as aggressive either.

Vinca minor 'Illumination' Vinca minor 'Illumination'
(Common periwinkle, creeping myrtle)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Like other creeping myrtles, 'Illumination' is a tough evergreen ground cover for shade that will grow in almost any soil. Its hallmark is its bright gold leaves that are edged with a border of irregular green. Periwinkle-blue flowers appear in spring. Use 'Illumination' as a shade ground cover or in hanging baskets. -Tom Nelson, Regional Picks: Northern California, Fine Gardening issue #127

Viola tricolor Viola tricolor
(Heartsease, Johnny-jump-up, Love-in-idleness, Wild pansy)
(3 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This annual, biennial, or short-lived perennial is grown for its long season of pansy flowers in shades of purple, blue, yellow, and white. Viola tricolor is pretty in containers, as edging, or as a companion for bulbs. It self-seeds readily.


Displaying 1 - 16 of 16 listings   Sort By: Sort