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Browse Plants

Narrowed By:Zone: 2, 10+ Flower Color: Blue, Purple/Lavender+ Seasonal Interest: Summer
Displaying 1 - 20 of 88 listings   1 | 2 | 3 | 4 | 5View AllNext > Sort By: Sort
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.

Agastache foeniculum Agastache foeniculum
(Anise hyssop)
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

A classic plant for both herb gardens and borders, anise hyssop is composed of erect branches of mint-and-licorice-scented, medium green leaves ending in fuzzy spikes of small lavender flowers. The plant grows to 3 to 5 feet tall and 1 foot wide and reseeds freely. The flowers are edible and are charming crumbled into salads. The flowers are highly attractive to bees, butterflies, and hummingbirds.

Agastache rupestris Agastache rupestris
(Sunset hyssop)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

True to its name, sunset hyssop encapsulates a Western sunset in its flowers: bronze with hints of orange and yellow, and streaks of magenta and pink along the margins. More and more flowers emerge as summer progresses. The plant blooms heavily in August, and continues into autumn.

Ageratum houstonianum Ageratum houstonianum
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

There are many cultivars available of this fast-growing annual. They are best used as bedding, edging, or container plants. Panicles of blue, pink, purple, or white flowerheads arise from oval, downy leaves in midsummer and continue until frost. They have a soft, fuzzy appearance and attract butterflies.

Allium caeruleum Allium caeruleum
(Blue globe onion)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant produces dense clusters of bright blue flowerheads up to 1 inch wide. Its leaves clasp its stem and die back before flowering.

Allium giganteum Allium giganteum
(Ornamental onion)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

In summer, this plant bears large rounded flower heads up to 4 inches across with a multitude of star-shaped lilac-pink flowers.

Allium schoenoprasum Allium schoenoprasum
(Chives)
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

The purple or white pom-pom flowers of chives top aromatic stems in summer. The leaves are edible and have a mild onion flavor; the flowers can be used as garnishes. Plants grow in dense clumps to 2 feet high. Use chives in a cottage, herb, or vegetable garden, or in containers.

Allium senescens Allium senescens
(Ornamental onion)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant has thin, strap-like foliage that tends to twist. It produces up to 30 long-lasting, 12- to 40-inch-tall pink or lilac flowers in mid- to late summer.

Allium sphaerocephalon Allium sphaerocephalon
(Drumstick allium, Round-headed garlic)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

The drumstick allium has egg-shaped flowers in summer that start off green, then bloom and develop to pink and then clover red-purple. These plants are attractive in a bed or border, especially peeking up through other plants, such as roses, so that their nondescript foliage is hidden. Their vertical presence and eye-catching flower shape are valuable additions to the garden, and they naturalize freely.

Angelonia angustifolia Angelonia angustifolia
(Angelonia)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Upright, low perennial with deep mauve to violet two-lipped flowers blooming all summer. Angelonia are superlative container plants, and can also be grown as bedding annuals.

Asarum canadense Asarum canadense
(Wild ginger, Canadian wild ginger)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

The rounded, lustrous leaves of this native plant form an appealing green ground cover. This plant produces beautiful, 2- to 4-inch, glossy green heart-shaped leaves. In spring, you'll find interesting, mauve-purple flowers hidden under its foliage. -Marty Hair, Regional Picks: Upper Midwest, Fine Gardening issue #127

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.

Browallia americana Browallia americana
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant produces distinct, 2-inch blossoms primarily in rich blue (but also in shades of purple and white), with dark eyes smudged white. It is suitable for sun and partial shade.

Calamagrostis 'Karl Foerster' Calamagrostis 'Karl Foerster'
(Karl Foerster feather reed grass)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This versatile ornamental grass has slender, upright, deep-green foliage. A cool season grass, it is upright and clump forming, with purplish-green, feathery plumes that can reach 6 feet in height. It blooms in early summer rather than fall and must have winter chill to bloom.



Information provided by Santa Rosa Gardens.

Calamintha nepeta Calamintha nepeta
(Lesser calamint)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Lesser calamint produces fine, upright stems which are covered with small, shiny, dark green leaves, forming a little bush from 12 to 18 inches tall, and twice as wide. In late August, it produces a cloud of infinitesimal pale lavender flowers that continue blooming for up to six weeks. As the days become cooler, the color of the tiny, lipped blossoms deepens.

Camassia leichtlinii ssp. suksdorfii 'Blue Danube' Camassia leichtlinii ssp. suksdorfii 'Blue Danube'
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Spikes of violet, star-shaped flowers top stems reaching from 2 to 4 feet in late spring. The species is native to western Oregon. 'Blue Danube' would be beautiful in a border, meadow, or containers. Camassia make good cut flowers.

Canna × generalis Canna × generalis
(Indian shot)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Cannas bear broad, smooth paddle-like leaves reminiscent of banana plants. The oversize leaves make it easy to create dramatic combinations with other, more finely textured plants. Each stout, fleshy stem is topped with attractive spires of brightly colored flowers. Cultivars vary widely in height, foliage, and bloom.

Capsicum annuum 'Black Pearl' Capsicum annuum 'Black Pearl'
(Ornamental pepper)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This pepper boasts the most dramatically deep purple-black leaves and fruit imaginable. The vigorous, bushy plants grow to 18 inches tall and almost as wide. Flowers are lilac, and dark black peppers emerge in fall.

Centaurea cineraria 'Colchester White' Centaurea cineraria 'Colchester White'
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Best used as a foliage plant, this plant's intricately cut, frosty-silver leaves produce a large, elegant arching mound. It also bears pale lavender-blue pin-cushion flowers on lanky 30-inch stems in late spring.

Cistus albidus Cistus albidus
(Rock rose, Sun rose)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This is an evergreen, bushy shrub native to southwestern Europe and North Africa. Rock roses are useful in a shrub border, on a hillside, or in containers. Cistus albidus bears vibrant lilac-pink flowers in summer. Although each flower lasts only one day, they are produced in great numbers on plants that are 3 feet tall and wide.


Displaying 1 - 20 of 88 listings   1 | 2 | 3 | 4 | 5View AllNext > Sort By: Sort