Stunning Flowers That Start With The Letter ‘S’

Some of the world’s most stunning flowers start with the letter ‘S’. From sages and salvias to snapdragons and sunflowers, you could plan an entire garden display around the letter ‘S’. In this list, I’ll look at 50 spectacular flowers that begin with the letter ‘S’.

Field Scabious

50 Flowers That Start With the Letter ‘S’

1) Saffron Crocus

Saffron Crocus are beautiful flowers that start with the letter 's'

Saffron crocuses have been cultivated by humans for thousands of years. These crocuses produce saffron threads, which have several culinary uses. However, saffron crocuses are also perfect for creating a colorful fall display in USDA Zones 6 to 9.

These low-growing bulbous perennials have large purple flowers with six petals covered in veins. Three reddish-orange stamens occupy the center of each flower. Saffron crocuses also have narrow grass-like leaves with white stripes.

Scientific Name:Crocus sativus
Native Range:Asia & Europe
Flowering Season:Fall

2) Sage

Sage are beautiful flowers that start with the letter 's'

Thanks to its wonderful taste and aroma, Sage is one of my favorite culinary herbs. As such, sage is perfect for kitchen gardens, herb gardens, or Mediterranean gardens in Zones 4 to 10. However, I prefer growing my sage in containers.

Sage plants are spreading evergreen perennials with soft, fuzzy, grayish-green leaves. These leaves have a pungent aroma, especially when crushed. During the summer, sage plants also have small bluish-purple flowers.

Scientific Name:Salvia officinalis
Native Range:Mediterranean Europe
Flowering Season:Summer to fall

3) Salvia

Salvia are beautiful flowers that start with the letter 's'

The Salvia genus is a large group of flowering plants from the sage family (Lamiaceae). Most salvias are grown as annuals or herbaceous perennials. Salvias thrive in full sun and are perfect for herbaceous borders, containers, and dry gardens in Zones 3 to 12.

Most salvias have upright stems and fragrant lance-shaped leaves. From summer until fall, salvias produce colorful spikes of tubular flowers with two distinctive lips. The flowers are extremely popular with pollinators.

Scientific Name:Salvia spp.
Native Range:Asia, Europe, & the Americas
Flowering Season:Summer to fall

4) Sandwort

Sandwort flowers in bloom

Sandworts are a group of attractive low-growing plants that grow best in Zones 4 to 8. As such, sandworts make excellent ground cover plants in garden borders or rock gardens. As their name suggests, sandworts perform well in loose, nutrient-poor sandy soils.

These low-growing evergreen plants form mats of glossy elliptical leaves. During spring and summer, sandworts produce drifts of large cup-shaped or star-shaped white or pink flowers.

Scientific Name:Arenaria spp.
Native Range:Europe & North America
Flowering Season:Spring to summer

5) Saxifrage

 Saxifrage flowers in bloom

Commonly known as rockfoils, saxifrage flowers are low-growing herbaceous plants that are ideal for rock gardens. Saxifrage flowers can be grown as annuals, biennials, or perennials in Zones 2 to 9, depending on the species.

Saxifrage plants have rosettes of succulent or needle-like leaves. Saxifrages can flower from late winter until fall, depending on the exact species. Most saxifrages have clusters of colorful star-shaped flowers ranging from pink and purple to white.

Scientific Name:Saxifraga spp.
Native Range:Northern Hemisphere
Flowering Season:Winter to fall

6) Scabious

Pink Scabious flowers in bloom

Scabious flowers are some of my personal favorites. Also known as pincushion flowers, these herbaceous annuals or perennials have colorful nectar-rich flowers. As such, I usually plant scabious flowers in my wildflower borders or containers.

Most scabious plants have pinnate fern-like grayish-green leaves although some also lanceolate to oval-shaped basal rosettes. From spring until fall, scabious plants produce several colorful pincushion-like blooms with delicate petals and dense central florets.

Scientific Name:Scabiosa spp.
Native Range:Africa, Asia, & Europe
Flowering Season:Spring to fall

7) Scarlet Sage

Scarlet Sage flowers in bloom

Scarlet sage is a popular type of salvia known for its gorgeous red tubular flowers. These flowers are accompanied by hairy green leaves with scalloped margins. Although often grown as a herbaceous annual, scarlet sage can be grown as a tender perennial in Zones 8 to 11.

Scarlet sage thrives in full sun and requires fertile, well-draining soils. These drought-tolerant flowers also tolerate sandy soils. Scarlet sage grows particularly well in containers.

Scientific Name:Salvia coccinea
Native Range:The Americas
Flowering Season:Summer to fall

8) Scotch Heather

Scotch Heather flowers in bloom

Throughout the year, heather shrubs bring seasonal interest to your garden. And in my opinion, scotch heather is one of the best heather shrubs to pick. This heather thrives in full sun and is perfect for rock gardens in Zones 5 to 7.

Scotch heather shrubs have small, scale-like leaves and terminal racemes of tiny mauve or white flowers. Scotch heather is a hardy variety that can handle cold temperatures.

Scientific Name:Calluna vulgaris
Native Range:Asia & Europe
Flowering Season:Summer to fall

9) Sea Holly

Blue Sea Holly flowers

Sea hollies are fantastic herbaceous annuals or perennials that are often grown as ornamental plants. These drought-tolerant plants are ideal for dry gardens, rock gardens, and coastal areas. Sea hollies grow best in full sun in Zones 2 to 10, depending on the species.

These attractive plants add structure to garden displays thanks to their spiny leaves and thistle-like flowers. Sea hollies also symbolize admiration in the language of flowers.

Scientific Name:Eryngium spp.
Native Range:Around the world
Flowering Season:Summer to fall

10) Sea Lavender

Purple Sea Lavender flowers in bloom

Sea lavenders are attractive herbaceous perennials that are usually grown as ornamentals or for dried flowers. Despite their common name, sea lavenders aren’t actually related to true lavenders. Regardless, these plants thrive in Zones 3 to 11, depending on the exact species.

Sea lavenders have basal rosettes of oval-shaped to spoon-shaped leaves. These perennials also have dense clusters of tiny pink, purple, or white flowers with papery petals.

Scientific Name:Limonium spp.
Native Range:Africa, Asia, & Europe
Flowering Season:Spring to fall

11) Sea Thrift

Pink Sea Thrift flowers in bloom

Sea thrift flowers are beautiful spring blooms that grow best in Zones 3 to 9. These evergreen perennials have dense clusters of small pink or pinkish-purple flowers. Sea thrift is a drought-tolerant plant that thrives in full sun.

These perennials form attractive mounds of slender, grass-like leaves. Sea thrift works best as a ground cover plant in beds and borders. These plants also tolerate salty air, making them ideal for coastal areas.

Scientific Name:Armeria maritima
Native Range:Northern Hemisphere
Flowering Season:Spring

12) Sedum

Sedum flowers in bloom

Sedums are some of my favorite flowers that start with ‘S’. Also known as stonecrops, the Sedum genus contains approximately 500 species. Sedums can be grown as annuals, biennials, or perennials and thrive in Zones 3 to 10.

Sedums form mats or clumps of attractive succulent leaves. From summer until fall, sedums also have gorgeous clusters of small pink, red, yellow, or white flowers. Sedums grow best in full sun in containers or as mass plantings in borders.

Scientific Name:Sedum spp.
Native Range:Worldwide
Flowering Season:Summer to fall

13) Sensitive Plant

Pink Sensitive Plant flowers in bloom

Sensitive plants get their name from their unusual bipinnate compound leaves. The leaves are covered with tiny hairs that cause each leaf to curl up when touched. Sensitive plants are frequently grown as houseplants but can also be grown outdoors in Zones 7 to 13.

These low-growing annuals or perennials make interesting ground cover plants in warm, humid conditions. During the summer, sensitive plants have fluffy pom-pom-like pink or purple flowers.

Scientific Name:Mimosa pudica
Native Range:Central & South America
Flowering Season:Summer

14) Shasta Daisy

Shasta Daisies are beautiful flowers that start with the letter 's'

Shasta daisies are charming hybrid perennials that are popular as ornamental flowers. Shasta daisies were first bred in 1890 and named after California’s Mount Shasta. These gorgeous daisies thrive in borders and meadow gardens in Zones 4 to 9.

Shasta daisies have large flowers with white ray petals and yellow central florets. These cheery blooms make fantastic cut flowers. Shasta daisies also have rosettes of coarse, dark green lanceolate leaves.

Scientific Name:Leucanthemum x superbum
Native Range:North America
Flowering Season:Summer

15) Shooting Star

Shooting Star flowers in bloom

Shooting stars are vibrant herbaceous perennials from the primrose family (Primulaceae). These plants have rosettes of lance-shaped leaves and dark upright stems. During late spring, these stems have clusters of nodding pinkish-purple to white flowers that resemble shooting stars.

These perennials are ideal for spring borders in Zones 4 to 8. Shooting stars grow best in partial shade and prefer moist, well-draining soils. As such, shooting stars work well in woodland areas.

Scientific Name:Dodecatheon meadia
Native Range:North America
Flowering Season:Spring

16) Siberian Iris

Siberian Iris flowers in bloom

Siberian irises are some of the most dramatic irises available. These herbaceous perennials produce dense clumps of green lance-shaped leaves. During spring and summer, these irises have intricate blue flowers with purple veins.

Like most irises, Siberian irises grow best in full sun or partial shade and thrive in Zones 3 to 8. These low-maintenance, drought-tolerant flowers are excellent in cottage gardens, borders, and Mediterranean gardens.

Scientific Name:Iris sibirica
Native Range:Central Asia & Europe
Flowering Season:Spring to summer

17) Siberian Squill

Blue Siberian Squill flowers in bloom

Squill flowers are attractive bulbous perennials, and the Siberian squill is no exception. During the spring, these plants produce up to four long lance-shaped leaves. Siberian squills also have racemes of nodding, bell-shaped blue flowers.

These vibrant perennials are fairly adaptable and thrive in full sun or partial shade. Siberian squills also like well-draining soils in Zones 2 to 8. These flowers work well in shady borders alongside shrubs.

Scientific Name:Scilla siberica
Native Range:Central Asia & Europe
Flowering Season:Spring

18) Sidalcea

Pink Sidalcea flowers in bloom

Sidalcea flowers are herbaceous annuals or perennials commonly known as checker mallows. These North American wildflowers grow in clumps of palmate leaves with several lobes. Sidalcea flowers grow best in well-draining soils in Zones 5 to 9.

During the summer, Sidalcea flowers have upright stems covered with pink or pinkish-purple cup-shaped flowers with white centers. These beautiful flowers look like smaller versions of hollyhock flowers. Sidalcea flowers are perfect for wildflower borders.

Scientific Name:Sidalcea spp.
Native Range:North America
Flowering Season:Summer

19) Skullcap

Purple Skullcap flowers in bloom

Skullcaps are colorful herbaceous annuals or perennials with racemes of tubular bluish-purple flowers. The distinctive lips of the flowers resemble medieval helmets known as skullcaps, hence the common name. These plants also have grayish-green ovate leaves.

The Scutellaria genus contains between 300 and 400 species that belong to the mint or sage family (Lamiaceae). Most skullcaps grow best in Zones 2 to 8 and prefer full sun or partial shade.

Scientific Name:Scutellaria spp.
Native Range:Worldwide
Flowering Season:Summer to fall

20) Snapdragon

Snapdragon flowers in bloom

I love snapdragons because they’re easy to grow and add some fantastic color to garden beds and borders. However, I prefer growing them in containers for a long-lasting display. Snapdragons are often grown as annuals but can be grown as perennials in Zones 5 to 10.

Snapdragons are herbaceous plants with upright stems with whorls of lanceolate leaves. Snapdragons also have spikes of colorful flowers with distinctive lips. When squeezed, the flowers gape open like a dragon’s maw.

Scientific Name:Antirrhinum majus
Native Range:Europe
Flowering Season:Spring to fall

21) Sneezeweed

Yellow Sneezeweed flowers in bloom

Sneezeweeds are cheery North American wildflowers that form clumps of dark green lance-shaped leaves. From summer until fall, these flowers produce drifts of bright yellow daisy-like flowers. Historically, dried sneezeweed leaves were used to make snuff to help cast out evil spirits.

Sneezeweeds are ideal for wildflower borders or prairies in Zones 3 to 8. These charming flowers work well in mass plantings. Sneezeweed blooms are also popular as cut flowers.

Scientific Name:Helenium autumnale
Native Range:North America
Flowering Season:Summer to fall

22) Snowball Tree

White Snowball Tree flowers in bloom

Commonly known as guelder roses, snowball trees are breathtaking flowers that are frequently used by florists. These deciduous shrubs have large, dense clusters of light green flowers that gradually turn pure white. Snowball trees also have palmate leaves with three lobes and serrated edges.

Snowball trees are low-maintenance shrubs that grow best in Zones 3 to 8. Snowball trees are ideal for mixed shrub borders but also work well as hedges.

Scientific Name:Viburnum opulus ‘Roseum’
Native Range:Africa, Asia & Europe
Flowering Season:Spring to summer

23) Snowberry

Snowberry flowers in bloom

Snowberries are attractive deciduous shrubs from the honeysuckle family (Caprifoliaceae). These popular low-maintenance shrubs grow best in full sun to partial shade and tolerate most types of soils. Snowberry shrubs thrive in Zones 3 to 7.

Snowberry shrubs form thickets of stiff branches and oval-shaped leaves. During the summer, snowberries have clusters of pink or white bell-shaped flowers. These flowers are followed by large white berries that are poisonous to humans.

Scientific Name:Symphoricarpos albus
Native Range:North America
Flowering Season:Summer to fall

24) Snowdrop

White Snowdrop flowers in bloom

Snowdrops are some of my favorite spring flowers. These elegant perennials grow in clumps of slender grayish-green lanceolate leaves. From late winter until spring, snowdrops have beautiful nodding bell-shaped white flowers.

These perennials look especially stunning in mass planting in shady borders in Zones 3 to 8. Snowdrops multiply quickly but can be divided once the leaves have died back. Snowdrops are also one of the two official January birth month flowers alongside carnations.

Scientific Name:Galanthus nivalis
Native Range:Europe
Flowering Season:Winter to spring

25) Snowflake

White Snowflake flowers in bloom

Similar to snowdrops, snowflake plants have white bell-shaped flowers with green spots on each petal. These members of the amaryllis family also have clumps of glossy dark green lance-shaped leaves.

Snowflake flowers are bulbous perennials that bloom at the same time as snowdrops. Snowflake flowers grow best in rich, well-draining soils that hold some moisture. These flowers thrive in shady locations such as garden beds or borders in Zones 3 to 9.

Scientific Name:Leucojum spp.
Native Range:Asia & Europe
Flowering Season:Winter to spring

26) Snowy Mespilus

White Snowy Mespilus flowers in bloom

Commonly known as juneberry shrubs, snowy mespilus is a deciduous shrub from the rose family. These shrubs are naturally occurring hybrids derived from various species of serviceberry shrubs. Snowy mespilus shrubs work well as hedges or ornamental plants in Zones 4 to 8.

Snowy mespilus shrubs have elliptical leaves that are reddish-pink when young before turning green and then reddish-brown. From spring until summer, snowy mespilus shrubs have clusters of white star-shaped flowers.

Scientific Name:Amelanchier x lamarckii
Native Range:North America
Flowering Season:Spring to summer

27) Solidago

Yellow Solidago flowers in bloom

Commonly known as goldenrods, solidago flowers are stunning North American wildflowers from the daisy family. Solidago flowers are herbaceous perennials with upright stems and narrow lance-shaped leaves. From summer until fall, solidago plants erupt with dense clusters of yellow flowers.

Solidago flowers thrive in most types of soil in Zones 3 to 10. However, some species can spread aggressively in moist soils. Solidago plants look great in garden borders and wildflower gardens.

Scientific Name:Solidago spp.
Native Range:North America
Flowering Season:Summer to fall

28) Solomon’s Seal

Solomon's Seal flowers in bloom

Solomon’s seal is an attractive herbaceous perennial from the asparagus family (Asparagaceae). These beautiful plants have arching, almost horizontal branches decorated with white tubular flowers with green tips.

Solomon’s seal plants also have lance-shaped to oval-shaped leaves that turn yellow in the fall. These herbaceous perennials grow best in shady beds and borders in Zones 4 to 8. Solomon’s seal also grows well in woodland areas.

Scientific Name:Polygonatum spp.
Native Range:Asia
Flowering Season:Spring to summer

29) Spanish Bluebell

White Spanish Bluebells are beautiful flowers that start with the letter 's'

Spanish bluebells are perfect for spring borders and woodland areas, thanks to their beautiful blue flowers. These popular ornamental bulbs can quickly spread through a border to create colorful drifts. Spanish bluebells thrive in Zones 3 to 8.

Spanish bluebells grow in upright clumps of glossy, lance-shaped leaves. During the spring, these bluebells have racemes of nodding bell-shaped flowers. These flowers also come in shades of pink and white.

Scientific Name:Hyacinthoides hispanica
Native Range:Europe
Flowering Season:Spring

30) Speedwell

Purple Speedwell flowers in bloom

Speedwell flowers are a group of approximately 500 plants from the figwort family (Scrophulariaceae). Speedwell plants can be grown as annuals or as herbaceous perennials in Zones 4 to 9, depending on the species.

Speedwell plants have variable leaves that can come in elliptical whorls or small, creeping leaves. Speedwell plants also produce spikes or racemes of beautiful blue, pink, or white flowers.

Scientific Name:Veronica spp.
Native Range:Northern Hemisphere
Flowering Season:Spring to summer

31) Spider Flower

Pink Spider flowers in bloom

Spider flowers are fantastic ornamental annuals that thrive in Zones 2 to 11. These flowers work best in large groups in garden beds, borders, and containers. Spider flowers also attract pollinators.

These gorgeous annuals have upright stems with palmate leaves that are divided into five to seven leaflets. The leaves are also slightly aromatic. Spider flowers also have fragrant clusters of pink, purple, or white flowers.

Scientific Name:Cleome hassleriana
Native Range:South America
Flowering Season:Summer to fall

32) Spider Lily

Red Spider Lily are beautiful types of flowers that start with the letter 's'

Spider lilies are dramatic herbaceous perennials that grow best in Zones 5 to 10. Plant them in garden borders or containers. Spider lilies tolerate full sun but prefer partial shade.

Spider lilies are also known as resurrection lilies because they only bloom after a period of dormancy. In the spring, the strap-like leaves die back. Then, in late summer, spider lilies suddenly produce breath taking pink, orange, red, yellow, or white flowers with elegantly curved petals.

Scientific Name:Lycoris spp.
Native Range:Asia
Flowering Season:Summer to fall

33) Spiderwort

Spiderwort plants in bloom

Spiderworts are herbaceous perennials that grow best in Zones 4 to 9. Some spiderworts are also grown as houseplants. Most spiderworts form clumps of arching strap-like leaves. However, others are climbing or trailing vines with elliptical to ovate leaves that have silver and purple stripes.

Spiderworts also produce blue, pink, purple, or white flowers with three petals. They work particularly well in shady woodland gardens or wildflower borders.

Scientific Name:Tradescantia spp.
Native Range:The Americas
Flowering Season:Spring to summer

34) Spirea

Spirea flowers in bloom

Also known as meadowsweet, spirea plants are hardy deciduous shrubs from the rose family. I love adding spirea shrubs to garden borders because of their varied flowers. Spirea shrubs have dense clusters, panicles, or spikes of pink, red, or white flowers.

Spirea shrubs also have dark green lanceolate leaves with toothed margins. These shrubs thrive in moist or wet soils in Zones 3 to 8, depending on the species.

Scientific Name:Spiraea spp.
Native Range:Northern Hemisphere
Flowering Season:Summer to fall

35) St John’s Wort

Yellow St John's Wort flowers in bloom

St John’s wort has been used as a medicinal plant for centuries. Nowadays, St John’s wort is commonly used as an antidepressant. These herbaceous perennials also make wonderful ornamental plants in Zones 3 to 8.

These plants have upright stems and elliptical to oblanceolate leaves. Although flowers won’t appear in the first year, established St John’s wort plants have dense clusters of showy bright yellow flowers.

Scientific Name:Hypericum perforatum
Native Range:Africa & Eurasia
Flowering Season:Summer

36) Star of Bethlehem

White Star of Bethlehem flowers in bloom

Star of Bethlehem flowers are compact herbaceous perennials that work brilliantly as ground cover plants in Zones 4 to 9. However, they are classed as invasive in some areas. Star of Bethlehem flowers thrive in moist, fertile, well-draining soils and prefer partial shade.

These low-growing perennials have linear green leaves with greenish-white stripes in the middle. From late spring until early summer, these plants produce masses of white star-shaped flowers with six petals.

Scientific Name:Ornithogalum umbellatum
Native Range:Africa & Europe
Flowering Season:Spring to summer

37) Starflower

Blue Starflowers

Also known as borage, starflowers are nectar-rich flowers that attract legions of pollinators, making them ideal for wildflower gardens. Starflowers are herbaceous annuals that grow best in Zones 2 to 11.

Starflowers have bristly elliptical leaves and stems. From summer to fall, these annuals produce masses of edible blue star-shaped flowers. Starflowers self-seed readily but rarely become invasive. I love growing them in containers in the Mediterranean or kitchen gardens.

Scientific Name:Borago officinalis
Native Range:Mediterranean Europe
Flowering Season:Summer to fall

38) Stock

Colorful Stock flowers in bloom

Stock flowers are pungent, vibrant flowers from the cabbage family (Brassicaceae). Due to their sweet, heady fragrance, stock flowers are popular with florists and make excellent cut flowers. Stock flowers thrive in borders or cottage gardens in Zones 7 to 10.

These flowers have clumps of hairy grayish-green lance-shaped leaves. From late spring until mid-summer, these perennials have clusters of blue, pink, purple, red, yellow, or white flowers.

Scientific Name:Matthiola incana
Native Range:Europe
Flowering Season:Spring to summer

39) Strawflower

Colorful Strawflowers in bloom

Also known as golden everlasting, strawflowers are cheerful, colorful flowers native to Australia. These flowers are usually grown as annuals but can be short-lived perennials in Zones 8 to 10. Strawflowers grow best in full sun in Mediterranean or rock gardens.

Strawflowers grow in clumps of grayish-green lance-shaped leaves. The flowers have yellow central florets surrounded by stiff pink, orange, red, yellow, or white bracts. Strawflowers prefer fairly dry, well-draining soils.

Scientific Name:Xerochrysum bracteatum
Native Range:Australia
Flowering Season:Summer to fall

40) Summer Phlox

Pink Summer Phlox flowers in bloom

Summer phlox is one of North America’s most popular and pleasing native wildflowers. These herbaceous perennials have upright stems and dark green elliptical leaves. But summer phlox is best known for its dense, rounded clusters of fragrant pink, purple, red, and white flowers.

These intoxicating perennials also come in several cultivars that offer different colors. Summer phlox thrives in Zones 4 to 8 and is perfect for garden borders.

Scientific Name:Phlox paniculata
Native Range:United States
Flowering Season:Summer to fall

41) Sunchoke

Yellow Sunchoke flowers in bloom

Commonly known as Jerusalem artichokes, sunchoke flowers were grown by Native Americans for their nutritious tubers. Now, these herbaceous perennials are grown as ornamental flowers in Zones 3 to 9. Sunchoke flowers work particularly well in vegetable or wildflower gardens.

Sunchoke flowers have upright stems that can grow up to 10 feet tall. These perennials have coarse, hairy ovate leaves and bright yellow flowers with up to 20 ray petals.

Scientific Name:Helianthus tuberosus
Native Range:North America
Flowering Season:Summer to fall

42) Sunflower

A collection of bright blooming Sunflowers in a field

Sunflowers are some of the world’s most popular flowers. These towering herbaceous annuals are also grown as crops to produce sunflower seeds. As their name suggests, sunflowers grow best in full sun and need fertile, moist, well-draining soils.

Sunflowers have coarse, hairy, dark green ovate or heart-shaped leaves. The stems can grow up to 10 feet tall, bearing large yellow flowers with dark brown central florets. Sunflowers are extremely easy to grow, especially in summer borders.

Scientific Name:Helianthus annuus
Native Range:The Americas
Flowering Season:Summer

43) Swamp Milkweed

Pink Swamp Milkweed flowers with a butterfly perched on a flower head

I love swamp milkweeds because their nectar-rich flower heads attract masses of butterflies and other pollinators. These herbaceous perennials form clumps of stiff, lance-shaped leaves. Swamp milkweeds have gorgeous flat-topped clusters of small pink or purple flowers.

As their name suggests, swamp milkweeds grow best in moist to wet soils in Zones 3 to 11. Plant them in bog gardens or wildflower borders. These perennials flower best in full sun.

Scientific Name:Asclepias incarnata
Native Range:North America
Flowering Season:Summer

44) Swamp Sunflower

Yellow Swamp Sunflower

Thanks to their late bloom time, swamp sunflowers are ideal for a fall display. These sunflowers grow in clumps of narrow, hairy, grayish-green leaves. Each plant produces several bright yellow flowers with dark brown central florets.

Swamp sunflowers grow best in Zones 5 to 10 and prefer moist to wet soils. As such, these herbaceous perennials are perfect for bog gardens. Swamp sunflowers also work well in wildflower beds.

Scientific Name:Helianthus angustifolius
Native Range:United States
Flowering Season:Fall

45) Sweet Alyssum

White Sweet Alyssum flowers in bloom

If you’re looking for an attractive ground cover plant, sweet alyssum is perfect. These low-growing annuals can also be grown as short-lived perennials in Zones 9 to 11. Sweet alyssum is popular thanks to its sweet honey-like fragrance.

Sweet alyssum has creeping branched stems with hairy lanceolate or oval-shaped leaves. From late spring until fall, sweet alyssum produces dense clusters of tiny white flowers.

Scientific Name:Lobularia maritima
Native Range:Mediterranean Europe & North Africa
Flowering Season:Spring to fall

46) Sweet Pea

Pink Sweet Pea are beautiful types of flowers that start with the letter 's'.

Sweet peas are extremely popular ornamental flowers that come in several gorgeous cultivars. Sweet peas are climbing annuals that look great when allowed to climb supports. These flowers are known for their intoxicating scent.

Sweet peas have pinnate leaves with two leaflets and climbing tendrils. The complex flowers have a large upper petal, two slender middle petals, and two keel-like lower petals. These flowers can be blue, pink, purple, red, or white.

Scientific Name:Lathyrus odoratus
Native Range:Europe
Flowering Season:Spring to fall

47) Sweet William

Colorful Sweet William flowers in bloom

Known for their beautiful blooms, Sweet William flowers symbolize admiration, bravery, grace, and love. These herbaceous biennials or short-lived perennials are perfect for borders, cottage gardens, and containers in Zones 3 to 9.

Sweet William flowers have upright stems and bluish-green or dark-green lance-shaped leaves. In late spring, these plants have dense clusters of tiny single or double-bicolored flowers. Sweet William blooms until the first frost.

Scientific Name:Dianthus barbatus
Native Range:Asia & Europe
Flowering Season:Spring to fall

48) Sweetspire

Sweetspire flowers in bloom

Add a splash of color to bog gardens and pond margins by planting sweetspire plants. These beautiful deciduous shrubs have oval-shaped leaves that turn a rich reddish-orange in the fall. From spring until summer, sweetspire shrubs produce downward-facing spikes of tiny creamy-white flowers.

Sweetspire shrubs thrive in moist or wet soils in Zones 5 to 10. As such, these shrubs are ideal for places with poor drainage.

Scientific Name:Itea virginica
Native Range:United States
Flowering Season:Spring to summer

49) Sword Lily

Purple Sword Lily flowers in bloom

Named after their narrow sword-shaped leaves, sword lilies are one of the official August birth month flowers. During spring and summer, sword lilies have large, one-sided spikes of trumpet-shaped flowers. These flowers come in shades of pink, purple, red, yellow, and white.

Various sword lily cultivars are available, making these gorgeous flowers ideal for summer borders. Most sword lilies grow best in full sun in Zones 5 to 10.

Scientific Name:Gladiolus spp.
Native Range:Africa, Asia & Europe
Flowering Season:Spring to summer

50) Syringa

Pink Syringa flowers in bloom

Commonly known as lilacs, these stunning deciduous shrubs are famous for the heady, intoxicating scent of their colorful flowers. Syringa flowers bloom in dense, fragrant panicles during late spring. The flowers come in several shades of pink, purple, and white.

Syringa shrubs also have grayish-brown bark and heart-shaped or oval-shaped leaves. These wonderfully scented shrubs work best as spring centerpieces in Zones 3 to 7. Syringa shrubs flower best in full sun.

Scientific Name:Syringa vulgaris
Native Range:Europe
Flowering Season:Spring

Wrapping Up

Many gardeners will have grown some of the popular flowers that start with the letter ‘S’. Some of the most common include snapdragons, snowdrops, sunflowers, and sweet peas. Personally, I love sage flowers and scabious flowers, which are perfect for cottage gardens or wildflower borders.

Further Reading:

Contributing Editor | edd@petalrepublic.com | Full Bio

Edd is a budding content writer and gardener living in the United Kingdom. He has a bachelor's degree in Creative and Professional Writing and has written for several gardening publications online. He is passionate about nature and sustainability with a focus on gardening and wildlife.

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