Spiny Bear's Breeches (Acanthus spinosus). Hardy, herbaceous perennialDescription: Pure white flowers with purple bracts on 3' stalks, blooms in late spring to midsummer; shiny, dark green, deeply cut leaves with spiny margins Habit: Grows 4' high and 3' wide, ... - Spiny Bear's Breeches (Acanthus spinosus).
Strawberry Bush (Euonymus americanus). Description: Deciduous, eastern North American shrub with evergreen stems ?- Creamy yellow flowers followed by showy, glossy red-orange berries that hang by a single thread from the warty seed capsule after bursting open. Habit: Green arc... - Strawberry Bush (Euonymus americanus).
Strawberry-scented Geranium (Pelargonium x scarboroviae). Tender perennial grown as a houseplant for its fragrant foliageDescription: Small, crisped leaves smell of strawberries; seasonal blooming in shades of pale pink brushed with deeper pink; compact plant with slight trailing habit. Culture: Pre... - Strawberry-scented Geranium (Pelargonium x scarboroviae).
Swamp Milkweed (Asclepias incarnata). Hardy, herbaceous, North American perennialFragrant, pale pink flowers borne in tight clusters in summer atop tall stems with long, lance-shaped leavesOrigin: Eastern United StatesIn 1808, American naturalist William Bar... - Swamp Milkweed (Asclepias incarnata).
Sweet Bay Laurel (Laurus nobilis). Tender, slow growing, evergreen shrub Description: Aromatic, deep glossy green foliage used in cooking Habit: Can reach 40 feet out of doors, often with suckers at the base, but easily kept in a container for many year... - Sweet Bay Laurel (Laurus nobilis).
Sweet Bay Magnolia (Magnolia virginiana). Hardy, deciduous to semi-evergreen, Eastern North American tree Description: Fragrant, creamy-white, cup-shaped flowers open in early summer, followed by slender-seeded, cone-like fruit; leaves have a distinctive ... - Sweet Bay Magnolia (Magnolia virginiana).
Sweet Mockorange (Philadelphus coronarius). Deciduous, early summer-flowering shrub Description: Arching branches bear racemes of richly scented cup-shaped, pure white flowers in profusion; finely toothed, bright green foliage Habit: Grows to 10 feet high and 8 feet wide Cu... - Sweet Mockorange (Philadelphus coronarius).
Sweet William (Dianthus barbatus). Late-spring flowering biennial or short-lived perennial Description: Showy flowers are in a broad range of colors from reds and pinks to pure white; evergreen foliage Habit: Grows to 2 feet high and 2 feet wide Culture: Prefers full sun to light sha... - Sweet William (Dianthus barbatus).
Sweetpepper Bush; Summersweet (Clethra alnifolia). Deciduous eastern North American shrub Description: Upright racemes of delicately fragrant, white flowers in mid-summer when few other woody plants are in bloom; a favorite of bees Habit: Grows 3 to 8 feet high and 4 to 6 feet wide, form... - Sweetpepper Bush; Summersweet (Clethra alnifolia).
Sweetshrub (Calycanthus floridus). Hardy, North American shrub Description: Deep maroon, sweetly fragrant flowers in late spring Habit: Grows to 7 feet tall and 10 feet across Culture: Prefers full sun or light shade and rich, evenly moist, garden loam Hardi... - Sweetshrub (Calycanthus floridus).
Sword Flag or Corn Flag (Gladiolus communis ssp. byzantinus). Hardy, late spring-flowering bulb Description: Bright, deep-magenta flowers, up to 15 per stem, on 24-inch stalks above sword-like, fan-shaped foliage Habit: Grows 1 to 2 feet tall and up to 1 1/2 feet wide; may requir... - Sword Flag or Corn Flag (Gladiolus communis ssp. byzantinus).
Tall Thimbleweed (Anemone virginiana). Hardy, spring-blooming North American perennialDescription: Single, five-sepaled, greenish-white, upward-facing flowers rise on erect stems with whorls of deeply-divided leaves partway up the stems; distinctive, thimble... - Tall Thimbleweed (Anemone virginiana).
Tatarian Aster (Aster tataricus). Description: Hardy perennial bears lavender-blue flower heads in large clusters atop tall stalks in early fallHabit: 4-6 foot flower stalks from spreading clumps of paddle-shaped foliageCulture: Prefers full sun or light shade and evenly moist,... - Tatarian Aster (Aster tataricus).
Toothwood Fern (Dryopteris carthusiana). Description: Hardy, North American perennial - Finely-divided, lacy, bright green frondsHabit: Grows 18 to 36 inches high, forms vase-shaped clumps up to 36 inches wide Culture: Prefers partial to full shade and moist but well... - Toothwood Fern (Dryopteris carthusiana).
True Delight Iris (Iris x germanica cv.). Hardy, spring-flowering rhizomatous perennialDescription: Tall, plicata bearded iris; white standards and falls are edged in lavender "stitching"Habit: Erect, clump forming plants grow 3 feet high and 1-2 feet wide; spreading slow... - True Delight Iris (Iris x germanica cv.).
Trumpet Honeysuckle (Lonicera sempervirens). Woody, North American twining climber Description: Long, tubular flowers are rich, scarlet-orange outside and yellowish-orange inside, produced in clusters in late spring and sporadically through summer; foliage is dark green... - Trumpet Honeysuckle (Lonicera sempervirens).