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Browse Plants

Narrowed By:Type: Perennials, Trees+ Zone: 10+ Flower Color: Blue
Displaying 1 - 20 of 24 listings   1 | 2View AllNext > Sort By: Sort
Agapanthus praecox orientalis ATIblu Agapanthus praecox orientalis ATIblu

(Blue Storm™ agapanthus)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Compact, easy care and drought tolerant, Blue Storm is one of the Storm™ series of agapanthus that produce more flower stems than any other agapanthus.   In fact, Blue Storm flowers on average 10 weeks per season (up to two to three weeks longer than most other varieties). -Anthony Tesselaar Plants

Agastache ‘Blue Fortune’ Agastache ‘Blue Fortune’
(Blue Fortune hyssop)
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

'Blue Fortune' produces spikes of powder-blue flowers held over large, deep green foliage. The plant stands approximately 36 inches tall with a mature width of 18 inches. Peak bloom occurs in midsummer when butterflies are plentiful.

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 crispa Clematis crispa
(Marsh clematis, Blue jasmine, Curly clematis)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

A deciduous climber native to the southeastern United States, Clematis crispa bears lavender-blue, bell-shaped flowers with curly edges in summer. Its blooms are not profuse, but their elegant shape makes this plant a good choice for trellises, growing through shrubs, or planting in damp areas. The flowers are slightly fragrant and are followed by attractive seedheads. It also makes an unusual cut flower.

Clematis integrifolia Clematis integrifolia
(Solitary clematis)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Clematis integrifolia is a herbaceous, woody-based, upright, non-climbing perennial with a dense and somewhat sprawling habit. It bears solitary, nodding, bell-shaped flowers with slightly twisted violet to blue sepals and creamy white anthers from May to July. Sporadic blooming sometimes occurs throughout the summer. Blossoms mature to attractive, feathery, silver-green, or silvery brown seed heads.

Geranium himalayense Geranium himalayense
(Cranesbill)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant bears rich medium blue to violet-blue flowers from 1.5 to 2.5 inches wide in early summer, and blooms sporadically throughout the summer. 

Impatiens namchabarwensis Impatiens namchabarwensis
(Sapphire jewelweed, Blue diamond impatiens)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Sapphire jewelweed's serrated leaves are the color of polished jade, while the flowers are a remarkable sapphire blue. Far different from the traditional flat-disk shape of most bedding impatiens, the flower shape of this impatiens resembles an elegant crane in flight. Sapphire jewelweed grows remarkably fast, reaching almost 2 feet tall and wide. It shines in a woodland garden.

Impatiens walleriana cvs. Impatiens walleriana cvs.
(Busy Lizzie, Patience plant)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This subshrubby perennial with light green to red-flushed stems has slightly toothed, scalloped, light to bronze-green or red-flushed leaves to 5 inches long. The showy, flat flowers bloom in white or shades of orange, pink, red, purple, violet, lavender-blue, and bicolors.

Iris cristata Iris cristata
(Crested iris)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Spectacular, but fleeting, stemless blooms have blue-lilac petals, each with a white patch and a yellow or orange crest on each fall. Crested iris blooms in May. Dagger-shaped leaves 5 to 6 inches tall form an attractive, cool green carpet of stiff leaves. ‘Alba’ is a white-flowered variety.

Nepeta × faassenii 'Walker's Low' Nepeta × faassenii 'Walker's Low'
(Catmint)
(11 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This mound of lavender-blue flowers and aromatic, grayish green leaves up to 2 feet tall and 3 feet wide is great as edging or in a border, herb, or rock garden. It is an easy to grow, prolific bloomer that seems to be deer resistant. It blooms the whole summer and tolerates some shade. It also looks great with roses or on walls.

Parahebe perfoliata Parahebe perfoliata
(Digger's speedwell)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This native of Australia has blue-green perfoliate leaves (similar to some eucalyptus) and blue-lilac flowers on somewhat floppy stems. Digger's speedwell likes a hot location and will ramble over walls or grow through shrubs beautifully.

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 guaranitica Salvia guaranitica
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This perennial produces long spires of large, deep blue flowers from mid-summer to frost. It forms a tall bush 6 feet tall by 2 feet wide that is great for the back of the border. It is drought tolerant because of its unusual, moisture-conserving rhizomes.

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. 

Salvia reptans Salvia reptans
(West Texas cobalt sage)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

West Texas cobalt sage is a marvelously distinct species that can be enjoyed by gardeners farther north, as long as they purchase the west Texas form, which is quite cold-hardy. This salvia has rigid stems with narrow, pungent leaves and resembles a bright green, upright grass for much of the growing season. In early fall, cobalt blue flowers burst open almost overnight and are a big draw for hummingbirds. Thanks to its deep roots, this wildflower is extremely xeric. West Texas cobalt sage grows to 4 feet tall.

Salvia uliginosa Salvia uliginosa
(Bog sage)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This moisture-loving perennial produces clear blue flowers with white highlights in late summer to mid-autumn. It forms an airy clump to 6 feet tall by 3 feet wide, and is great for the back of a border. It is tolerant of heavy soils.


Displaying 1 - 20 of 24 listings   1 | 2View AllNext > Sort By: Sort