Sagina  
  Sagina
S. subulata
Irish Moss

Height: 5 cm (2")
Spread: 35 cm (14")
Soil: Well-drained, but average soil.
Exposure: Full sun.
Flowers: Tiny, fragrant, abundant white flowers.
Cold Hardiness: Zone 3-9 (hardy to -40°C or -40°F)
Suggested Uses: B/w paving stones; Small gardens or patios; Planters.
General Information: Deer resistant; Drought tolerant; Will tolerate foot traffic; Evergreen.

  Sagina
S. subulata 'Aurea'
Scotch Moss

Height: 6 cm (2")
Spread: 20 cm (8")
Soil: Plant in well-drained soil.
Exposure: Full sun.
Flowers: Tiny, intensely fragrant, white flowers in summer.
Cold Hardiness: Zone 3-9 (hardy to -40°C or -40°F)
Suggested Uses: Rock garden; Between paving stones.
General Information: Deer resistant; Drought tolerant; Heat brings out fragrance in flowers; Evergreen.


Saponaria  
  Saponaria
S. ocymoides
Rock Soapwort

Height: 8 cm (3")
Spread: 45 cm (18")
Soil: Moist well-drained sandy soil.
Exposure: Full sun.
Flowers: Pink flowers in summer.
Cold Hardiness: Zone 2-9 (hardy to -46°C or -50°F)
Suggested Uses: Rock gardens and borders.
General Information: Drought tolerant; Deer resistant.

  Saponaria
S. ocymoides 'Rubra Compacta'
Rock Soapwort

Height: 5-10 cm (2-4")
Spread: 22-45 cm (9-18")
Soil: Average to dry sand or clay.
Exposure: Full sun.
Flowers: Dark rose flowers from late spring to mid summer.
Cold Hardiness: Zone 4-8 (hardy to -34°C or -30°F)
Suggested Uses: Groundcover; Alpine and rock gardens.
General Information: Dense habit; Deer resistant; Drought tolerant; Evergreen.


Saxifraga  
  Saxifraga
S. crustata
Encrusted Saxifrage

Height: 15 cm (6")
Spread: 25 cm (10")
Soil: Well-drained, mildly acidic to mildly basic soil.
Exposure: Light shade to full sun.
Flowers: Creamy white flowers with red dots from May to September.
Cold Hardiness: Zone 5-9 (hardy to -29°C or -20°F)
Suggested Uses: Alpine or rock garden.
General Information: Leathery silver foliage; Lime-secreting pores create silver beads on the upper surface of foliage; Evergreen.

  Dwarf London Pride

S. × urbium 'Primuloides'

Dwarf London Pride
Height: 10-15 cm (4-6")
Spread: 15-20 cm (6-8")
Soil: Moist, humus-rich soil.
Exposure: Partial to full shade.
Flowers: Small, pale pink flowers in late spring and early summer if not planted in full shade
Cold Hardiness: Zone 4-10 (hardy to -34°C or -30°F)
Suggested Uses: Alpine or rock garden; Edges; Between stepping stones.
General Information: : Leaves in large rosettes; Deer and rabbit resistant; Drought tolerant; Evergreen.


Scleranthus uniflorus Scleranthus
Knawel Cushion
New Zealand Moss

Height: 2-5 cm (1-2")
Spread: 25-30 cm (10-12")
Soil: Well-drained, dry sandy soil or gravel.
Exposure: Full sun to partial shade.
Flowers: Insignificant green-white flowers from early spring until frost.
Cold Hardiness: Zone 7-10 (hardy to -18°C or 0°F)
Suggested Uses: Alpine or rock gardens; Ground cover; Edges.
General Information: Deer resistant; Drought tolerant; Dense cushion of lime green leaves; Evergreen.


Sedum  
  Sedum
S. acre 'Aureum'
Golden Stonecrop

Height: 8 cm (3")
Spread: 30-45 cm (12-18")
Soil: Average to dry soil.
Exposure: Full sun.
Flowers: Bright golden-yellow flowers in spring.
Cold Hardiness: Zone 2-9 (hardy to -46°C or -50°F)
Suggested Uses: Edging; Rock garden.
General Information: Drought tolerant; Deer resistant; Evergreen.

  Sedum
S. cauticola 'Lidakense'
Blue and Plum Stonecrop

Height: 5-10 cm (2-4")
Spread: 20-30 cm (8-12")
Soil: Tolerant of most soil conditions.
Exposure: Full sun to partial shade.
Flowers: Smoky-pink star-shaped flowers in summer.
Cold Hardiness: Zone 2-9 (hardy to -46°C or -50°F)
Suggested Uses: Alpine and rock gardens; Edges.
General Information: Blue leaves with plum edges and tints; Deer and rabbit resistant; Drought tolerant; Attracts butterflies.

  Sedum
S. hispanicum minus
Blue carpet

Height: 8 cm (3")
Spread: 30-45 cm (12-18")
Soil: Average to dry soil.
Exposure: Full sun.
Flowers: Bright golden-yellow flowers in spring.
Cold Hardiness: Zone 5-9 (hardy to -29°C or -20°F)
Suggested Uses: Edging; Rock garden.
General Information: Drought tolerant; Deer resistant; Evergreen.

  Sedum
 
S. makinoi 'Ogon'

Height: 5-8 cm (2-3")
Spread: Indefinite.
Soil: Well-drained soil.
Exposure: Full sun.
Flowers: Yellow blooms in summer.
Cold Hardiness: Zone 7-9 (hardy to -18°C or 0°F)
Suggested Uses: Rock gardens and borders.
General Information: Drought tolerant; Deer resistant; Evergreen.
  White Diamond

S. Pachyclados
White Diamond
Height: 2-10 cm (1-3")
Spread: 15 cm (6")
Soil: Average to dry.
Exposure: Sun to partial shade.
Flowers: Silvery pink flowers in summer.
Cold Hardiness: 3-10 (hardy to -40°C or -40°F)
Suggested Uses: Good for the rock garden or rock wall.
General Information: Evergreen; Drought tolerant.

  sedum
Sedum rupestre 'Angelina'
Angelina Stonecrop

Height: 10 cm (4")
Spread: 60 cm (24")
Soil: Well-drained soil.
Exposure: Full sun.
Flowers: Yellow star-shaped flowers in mid summer.
Cold Hardiness: Zone 3-9 (hardy to -40°C or -40°F)
Suggested Uses: Rock gardens and borders.
General Information: Drought tolerant; Deer resistant; Evergreen.

  Sedum
S. spathulifolium 'Cape Blanco' (N)
Spoon-leaved Stonecrop

Height: 10 cm (4")
Spread: 60 cm (24")
Soil: Well-drained, fertile soil.
Exposure: Full sun, but will tolerate light shade.
Flowers: In the summer bright yellow star-shaped flowers appear on short stems.
Cold Hardiness: Zone 5-9 (hardy to -29°C or -20°F)
Suggested Uses: Rock garden; Border plant.
General Information: Drought tolerant; Deer resistant; Divide every 3-4 years to encourage flowering; Native to the Pacific Northwest.

  Sedum
S. spurium 'John Creech'
John Creech Stonecrop

Height: 5-10 cm (2-4")
Spread: 25-30 cm (10-12")
Soil: Tolerant of most soil types.
Exposure: Full sun to partial shade.
Flowers: Mauve-pink star-shaped flowers in mid to late summer.
Cold Hardiness: Zone 2-9 (hardy to -46°C or -50°F)
Suggested Uses: Mass plantings; Alpine and rock gardens; Edges.
General Information: Deer and rabbit resistant; Drought tolerant; Attracts butterflies.

  Sedum
S. spurium 'Schorbuser Blut'
Dragon's Blood Stonecrop

Height: 10 cm (4")
Spread: 60 cm (24")
Soil: Moist well-drained soil.
Exposure: Full sun.
Flowers: Deep pink star-shaped flowers in late summer.
Cold Hardiness: Zone 4-9 (hardy to -34°C or -30°F)
Suggested Uses: Rock garden; Border plant.
General Information: Drought tolerant; Deer resistant; Evergreen; Leaves become purple-tinted when mature.


Selaginella  
  Selaginella
S. kraussiana 'Aurea'
Golden Spikemoss

Height: 2.5 cm (1")
Spread: Indefinite.
Soil: Plant in well-drained soil.
Exposure: Partial shade and/or partial sun.
Cold Hardiness: Zone 7-11 (hardy to -18°C or 0°F)
Suggested Uses: Border planting and hanging baskets.
General Information: Evergreen.


Sempervivum Sempervivum
Houseleek
Hens & Chicks

Height: 5 cm (2")
Spread: 15 cm (6")
Soil: Will tolerate poor, well-drained soil.
Exposure: Full sun.
Flowers: Stubby flower spikes in summer.
Cold Hardiness: Zone 2-9 (hardy to -46°C or -50°F)
Suggested Uses: Rock gardens; Along pathways.
General Information: Drought tolerant; Deer resistant; Will adapt well in areas of little or poor soil; Evergreen.


  Silene
Silene uniflora 'Druett's Variegated'
Rock Campion

Height: 15 cm (6")
Spread: 20 cm (8")
Soil: Well-drained, slightly acidic, fertile soil.
Exposure: Full sun.
Flowers: White double flowers appear in the summer on stiff upright branches.
Cold Hardiness: Zone 4-9 (hardy to -34°C or -30°F)
Suggested Uses: Use as a border plant or in a rock garden.
General Information: Drought tolerant; Semi-evergreen.


  Sisyrinchium
 
 
Sisyrinchium montanum (N)
Strict Blue-Eyed Grass

Height: 15-25 cm (6-10")
Spread: 20-30 cm (8-12")
Soil: Humus-rich soil.
Exposure: Partial sun and/or partial shade.
Flowers: Blue-eyed flowers with yellow centres from spring through fall.
Cold Hardiness: Zone 3-8 (hardy to -40°C or -40°F)
Suggested Uses: Along borders; Naturalizing along native plants.
General Information: Deer resistant; Drought tolerant; Native; Deciduous.


  Soldanella
Soldanella alpina
Alpine Snowbell

Height: 15 cm (6")
Spread: 15 cm (6")
Soil: Moist soil.
Exposure: Full sun.
Flowers: Bluish-violet flowers on stalks from April to May.
Cold Hardiness: Zone 4-7 (hardy to -34°C or -30°F)
Suggested Uses: Containers; Crevices.
General Information: Evergreen.


Soleirolia  
  Soleirolia
S. soleirolii
Baby's Tears

Height: 6 cm (2")
Spread: 24 cm (10")
Soil: Moist soil.
Exposure: Partial sun and/or partial shade.
Flowers: Pink-tinged white flowers in summer.
Cold Hardiness: Zone 10-11 (hardy to -1°C or 30°F)
Suggested Uses: Plant in crevices; Planters; Border plants.
General Information: Evergreen; Mat-forming.

  Soleirolia
S. soleirolii 'Aurea'
Golden Baby's Tears

Height: 5 cm (2")
Spread: Indefinite.
Soil: All soil types.
Exposure: Partial or light shade.
Flowers: Tiny pink flowers in summer.
Cold Hardiness: Zone 9-11 (hardy to -7°C or 20°F)
Suggested Uses: Containers; Groundcover; Between paving stones; Rockeries; Walls.
General Information: Gold-green leaves; Evergreen unless temperature drops below freezing.


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