Stipa lasiogrostis ( Needle Grass )

Deciduous perennial grass with tufted habit and dense foliage. Leaves are arching, linear, and blueish green. Silvery, purple tinged panicles of spikelets are produced in summer. Sometimes referred to as Stipa calamagrostis.

Stipa calamagrostis ( Needle Grass )

Deciduous perennial with tufted habit and dense foliage. Leaves are arching, linear, and blueish green. Silvery, purple tinged panicles of spikelets are produced in summer. Sometimes referred to as Stipa lasiogrostis.

Stigmaphyllon ciliatum ( Stigmaphyllon )

Evergreen climber with thin, branching stems. Leaves are hairy, oval, and light green with ear-shaped lobes at the bases. Corymb-like racemes of bright yellow flowers with clawed, fringed petals bloom in the fall. In warm areas, grow over a pergola, […]

Stewartia ovata ( Mountain Stewartia )

Stewartia ovata is a large shrub to small tree, with spreading branches. Summer foliage is dark green changing to a dramatic orange to scarlet in fall. Large, showy, white flowers have 5 to 6 crimped petals, purple to white filaments, […]

Stewartia malacodendron ( Silky Stewartia )

Stewartia malacodendron is a large shrub, or small tree. It is summer blooming with showy white flowers, 3 inch diameter, purple filaments with blue stamens. The fruit is a woody ovoid capsule. Native to the Coastal Plain of the southeastern […]

Sternbergia sicula ( Autumn Daffodil )

Bulbous perennial that bears yellow star-shaped flowers in the fall. Leaves are borne at the same time and are dark green with gray stripes. Ideal for a sunny rock garden; does not like winter moisture.

Sternbergia clusiana ( Autumn Daffodil )

Bulbous perennial that bears yellow funnel-shaped flowers in the fall. Blooms appear before the grayish green foliage emerges. Ideal for a sunny rock garden; does not like winter moisture. Sometimes referred to as Sternbergia macrantha.

Stephanocereus leucostele ( Cactus )

Upright and columnar, spiny, ribbed cactus with blueish green stems. White flowers with scaly yellow tubes are borne in summer from woolly cephaliums. Green fruit follows blooms and take many weeks to ripen.