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Browse Plants

Narrowed By:Type: Perennials+ Zone: 3, 9+ Flower Color: Purple/Lavender+ Seasonal Interest: Summer
Displaying 1 - 20 of 115 listings   1 | 2 | 3 | 4 | 5 | 6View AllNext > Sort By: Sort
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 rugosa Agastache rugosa
(Wrinkled giant hyssop, Korean hyssop, purple giant hyssop)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This 4-foot-tall and 18-ich-wide, bushy perennial, very similar to the more common anise hyssop (Agastache foeniculum) has strongly mint-and-licorice-scented leaves and short spikes of lavender-blue flowers from midsummer to early fall. Unlike most agastaches, both of these species can tolerate more moisture and humity, making them highly suited to climates outside the arid west.

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.

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.

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

This showstopper produces conspicuous, red-purple leaf sheaths with dense, purple domed flowerheads.

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.

Arisaema sikokianum Arisaema sikokianum
(Japanese cobra lily)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

The outside of the spathe is the color of dark chocolate, and the inside, milk white and as smooth as marble. Its hood sweeps up to an arrogant point, exposing its sumptuous white lining and the thick blunt spadix, which is also milk white. This plant produces two leaves per tuber, one leaf with three lobes and one with five. Sometimes they are mottled with silver, which makes them very handsome, at least until the plant goes dormant in summer.

Arisaema triphyllum Arisaema triphyllum
(Jack-in-the-pulpit)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

A favorite of children, Jack-in-the-pulpit is a tuberous perennial producing one or two leaves, each divided into three narrow leaflets. But it's best known for its spring to early summer display of hooded, green spathes—Jack's pulpit—which are often striped with purple. Autumn brings clusters of densely packed, showy red berries.

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

Asarum shuttleworthii Asarum shuttleworthii
(Evergreen wild ginger)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This wild ginger is an evergreen groundcover with heart-shaped, shiny leaves that are often marbled. Its interesting brown-purple flowers hide beneath the foliage.

Asarum shuttleworthii 'Callaway' Asarum shuttleworthii 'Callaway'
(Callaway ginger)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This is a slow-growing ginger, but worth the wait. Its round evergreen green leaves have a prominent silver-white mottling.

Aster macrophyllus Aster macrophyllus
(Bigleaf aster)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This striking, richly-textured, deciduous ground cover has heart-shaped leaves that turn mauve in autumn. Purple, blue, or white flowers appear in late summer to early fall.

Aster tataricus Aster tataricus
(Tatarian aster)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Tatarian aster is an impressive, stately perennial with a flowering height of 3 to 6 feet. It can look you in the eye yet require no staking. More important, this aster flowers longer than any other garden aster, beginning in late September and early October and continuing into November. The 1-inch-wide, light lavender flowers are a magnet for local and migrating monarch butterflies. This plant tolerates many soil types, can form large colonies in a few years, and is easily divided.

Boltonia asteroides Boltonia asteroides
(False chamomile)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Boltonias are vigorous perennials grown for their sprays of aster-like flowers, which appear above clean, gray-green foliage. Their vigorous nature makes them suitable for naturalizing. They are also great in the border (and for cutting), but will benefit from frequent dividing to keep in bounds, and may be cut back in late spring for more compact plants.

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.

Campanula persicifolia Campanula persicifolia
(Peach-leaved bellflower)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant is one of the most popular campanulas. Its stiff mat of slowly spreading evergreen rosettes is topped by 3-foot-tall, all open, bell-shaped lavender to white flowers in late spring.

Chelone obliqua Chelone obliqua
(Turtlehead)
(4 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Turtlehead is an excellent, sturdy, vertical perennial with rounded stems, medium texture and deep-green, boldly veined leaves on short stalks. Weather-resistant flowers are dark pink or purple, borne in short, dense, terminal spikes. The flowers are tubular 2-lipped blooms, with a sparse yellow beard inside each lower lip.

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.

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.


Displaying 1 - 20 of 115 listings   1 | 2 | 3 | 4 | 5 | 6View AllNext > Sort By: Sort