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Browse Plants

Narrowed By:Type: Perennials+ Characteristics: Self Seeds+ Botanical Name: S - U
Displaying 1 - 20 of 30 listings   1 | 2View AllNext > Sort By: Sort
Salvia coccinea Salvia coccinea
(Texas sage, Hummingbird sage)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This upright tender perennial provides rich color for annual bedding schemes where it is not hardy. Its deep red flowers are borne on 2- to 2.5- foot, open spikes from summer to autumn. Plants grow to about a foot wide and bear hairy, oval to heart-shaped leaves. Salvias are some of the showiest plants for containers, annual borders, and mixed borders. Butterflies and hummingbirds love them.

Silene armeria Silene armeria
(Sweet William catchfly, None-so-pretty)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Sweet William catchfly's vivid dark pink flower clusters beautify the garden in late summer. It is a herbaceous perennial most often grown as an annual, as it readily propagates from seed. Native to Europe, it has escaped gardens and naturalized in eastern and central North America, as well as the Pacific Northwest.

Silphium perfoliatum Silphium perfoliatum
(Cup plant)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

A coarse but bold perennial giant for the back of the border with yellow, daisy-like flowers in summer. Cups form where the toothed leaves meet the thick stems; birds are said to drink from the water held in the cups. Tough prairie natives that will self-sow, these plants need lots of sun and lots of room—a single plant can reach 7 or 8 feet tall and 6 feet across.

Sisyrinchium graminoides Sisyrinchium graminoides
(Blue-eyed grass)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This clump forming, semi-evergreen, grass-like perennial blooms in summer, with a long succession of yellow-centered blue flowers. It grows to 20 inches high and 6 inches wide, and self-sows easily.

no image available Sisyrinchium striatum
(Satin flower)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

In early summer, these grass-like perennials produce multiple spikes of small, pale yellow blooms with dark yellow centers and faint purple stripes. The flowers rise above gray-green foliage. Native to open woods, meadows, and prairies of South America, these adaptable wildflowers tolerate a wide range of conditions and naturalize easily. The summer blossoms each open for just one day with the morning sun and close at dusk. Rarely do the blooms open on cloudy days. Plants grow to 3 feet tall and 10 inches wide.

Smilacina racemosa Smilacina racemosa
(Solomon's plume, False Solomon's seal)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This shade-loving perennial produces plumes of creamy white blossoms in spring, followed by mottled yellowish-green berries that turn to deep red. The fragrant, ivory white blossoms occur on the ends of arching branches, distinguishing them from true Solomon's seal (Polygonatum). The plant grows to 3 feet high and 2 feet wide.

no image available Smyrnium perfoliatum
(Perfoliate Alexanders)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This spring bloomer produces bright chartreuse floral domes atop bract-like, rounded leaves that are pierced by the flower's stem. This plant's form and color contrast well with spring bulbs. It grows 3 feet tall and 2 feet wide. Let it regenerate itself by self-sowing. It is a biennial or short-lived perennial that makes an excellent cut flower and produces worthy combinations with neighboring shades of maroons and blues. Grow it in large, mixed borders, naturalistic plantings, and open woodlands.

no image available Solidago caesia
(Goldenrod, Wreath goldenrod, Blue-stemmed goldenrod)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

In early autumn, this species produces elegant, wand-shaped flowerheads atop wiry stems with blue-green, linear leaves. It is found in open woods and along woodland edges, and prefers some shade. It responds well to rich soil, but can tolerate dry soil also. 

Solidago flexicaulis Solidago flexicaulis
(Goldenrod, Zigzag goldenrod)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This species is aptly named for its distinctive crooked stems that bend back and forth at 45° angles between nodes. It bears starry, medium-yellow flowers atop 1- to 3-foot tall stems. 

Solidago juncea Solidago juncea
(Goldenrod, Early goldenrod, Yellow top)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This is the first goldenrod to bloom, featuring bright yellow, plume-like panicles in midsummer. It has dark green leaves along reddish stems, which form a vase-shaped clump when mature. 

Solidago nemoralis Solidago nemoralis
(Goldenrod, Gray goldenrod)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This is one of the smallest species of goldenrod, topping out at only 4 to 6 inches high in poor soils, and 2 feet high in fertile soils. It is considered a garden-worthy species, with gray-green leaves that form clumps and languid, one-sided yellow plumes. It is tolerant of both sandy and clay soils.

Solidago rigida Solidago rigida
(Goldenrod, Stiff goldenrod)
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This lovely goldenrod has velvety leaves that are gray-green in summer and dusky rose in autumn. It has broad, flattened clusters of rich yellow flowers, which create a striking display on stems 2 to 5 feet tall.

no image available Solidago rugosa
(Goldenrod, Rough-stemmed goldenrod)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This species has open, tree-shaped flower clusters that radiate out like a fountain. It has given rise to S. rugosa 'Fireworks'.  It can grow to 7 feet tall and blooms in mid- to late autumn.  

no image available Solidago speciosa
(Goldenrod, Showy goldenrod)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This garden-worthy species has dramatic, bright yellow flowers that are arranged into erect, pointed clusters. It has deep reddish stems that grow to 3 feet tall. It blooms in late summer and early autumn.

Solidago sphacelata 'Golden Fleece' Solidago sphacelata 'Golden Fleece'
(Goldenrod, Creeping goldenrod)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This outstanding cultivar forms a neat, 1-foot tall groundcover. It has dense, branched panicles that splay upward and outward whimsically, resembling a mass of elegantly bunched bouquets. 

Thalictrum rochebruneanum Thalictrum rochebruneanum
(Meadow rue)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This beautiful specimen has tall, delicate stems punctuated by clusters of columbine-like, bluish gray leaves. In summer, it bears sprays of nodding lavender-pink or white flowers with pale yellow stamens that reach as high as 3 feet. Plants grow to 12 inches wide. Plant at the back of a border; it may require staking.

Thalictrum rochebruneanum 'Lavender Mist' Thalictrum rochebruneanum 'Lavender Mist'
(Meadow rue)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This hauntingly beautiful specimen has blue-green foliage along matte, purple-green, willowy stems. At 5 or more feet in height, it has a dramatic yet delicate garden presence. Its sprays of nodding lilac flowers have pale yellow stamens. Plant at the back of a border; it may require staking.

Tiarella cordifolia Tiarella cordifolia
(Eastern foam flower)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This native North American species has pale green heart-shaped leaves which develop bronze highlights in the autumn. In summer, it produces a profusion of starry white flowers on 4- to 12-inch spikes. It self-sows freely.

no image available Trillium chloropetalum
(Giant trillium, Wakerobin, Wood lily, Trinity flower)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This species blooms in early to mid-spring with large blossoms of white, yellow, or deep purple-black. It is vigorous, growing to almost 18 inches tall and wide, with leaves (usually mottled) up to 8 inches long.

Trillium erectum Trillium erectum
(Red trillium, Purple trillium, Stinking Benjamin, Woodlily, Wakerobin, Trinity flower)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This trillium has upright or outward-facing blossoms of chocolate or reddish-purple, or occasionally white or yellow. At close range, it bears an unpleasant scent. It blooms in mid- to late spring, and grows from 14-20 inches tall and a foot wide.


Displaying 1 - 20 of 30 listings   1 | 2View AllNext > Sort By: Sort