perennial list: s-t

Salvia-Sage
Salvia superba

24/24 in.
60/60 cm.

Sun.

Gray/
green.

Pink, violet.

June to August.
Zone 3.
Well-drained.

Salvia-May
Night Sage
Salvia nemerosa
'May Night'

24/24 in.
60/60 cm.

Sun.

Gray/
green.

Indigo-violet.

May-July.
Zone 4.
Well-drained.

Sandwort
Arenaria montana

6/12 in.
15/30 cm.

Sun.

Green.

White.

May to July.
Zone 2.
Well-drained.

Saxifraga-Encrusted
Saxifraga paniculata

10/12 in.
25/30 cm.

Part shade.

Gray/
greeen.

White.

May to June.
Zone 3.
Moist and drained.

Saxifrage-Pyramidal
Saxifraga cotyledon

24/8 in.
60/20 cm.

Part shade.

Gray/
green.

White.

June.
Zone 3.
Moist and drained.

Saxifrage-London Pride
Saxifraga urbium

6/12 in.
15/30 cm.

Part shade.

Green.

Light pink.

May to June.
Zone 4.
Moist and drained.

Saxufrage-Mossy
Saxifraga arendsii

8/12 in.
20/30 cm.

Part shade.

Green

Red, pink, white.

May to June.
Zone 4.
Moist and drained.

Sea Holly
Eryngium amethystinum

24/12 in.
60/30 cm.

Sun.

Green.

Blue.

June to August.
Zone 2.
Well-drained.

Sedum-Tall Stonecrop
Sedum spectabile

24/24 in.
60/60 cm.

Sun.

Green.

Pink.

August to Sept.
Zone 3.
Well-drained.

Sedum-Dragon's Blood
Sedum spurium

6/18 in.
15/45 cm.

Sun.

Green, red.

Various.

June to August.
Zone 3.
Well-drained.

Sedum-Dwarf
Stonecrop
Sedum x species

6/18 in.
15/45 cm.

Sun.

Green.

Various.

June to August.
Zone 3.
Well-drained.

Shasta Daisy
Chrysanthemum superbum

24/18 in.
60/45 cm.

Sun or shade.

Green.

White.

June to Sept.
Zone 4.
Well-drained.

Shooting Star
Dodecatheon
meadia

12/6 in.
30/15 cm.

Part shade.

Green.

Pink.

May to June.
Zone 2.
Moist.

Snow-in-Summer
Cerastium tomentosum

12/24 in.
30/60 cm.

Sun.

Gray.

White.

May to June.
Zone 2.
Well-drained.

Snow-on-
the-Mountain
Aegopodium podagraria

12/24 in.
30/60 cm.

Shade.

Green, white.

Green-white.

July to August.
Zone 1.
Moist.

Soapwort-Rock
Saponaria ocymoides

8/18 in.
20/45 cm.

Sun.

Green.

Pink.

May to June.
Zone 2.
Well-drained.

Solomon's Seal
Polygonatum odoratum

24/12 in.
60/30 cm.

Shade.

Green.

White.

May to June.
Zone 3.
Moist.

Spiderwort
Tradescantia andersoniana

24/24 in.
60/60 cm.

Sun or shade.

Green.

Purple, pink.

June to August.
Zone 3.
Moist.

Spurge-Cushion
Euphorbia
polychroma

18/18 in.
45/45 cm.

Sun.

Green.

Yellow.

May to June.
Zone 3.
Well-drained.

Statice-German
Goniolimon tataricum

16/12 in.
40/30 cm.

Sun.

Green.

Light pink.

July to August.
Zone 3.
Well-drained.

Statice-Sea Lavender
Limonium latifolium

30/24 in.
75/60 cm.

Sun.

Green.

Lavender.

June to August.
Zone 2.
Well-drained.

Strawberry-Alpine
Fragaria vesca

10/12 in.
25/30 cm.

Sun or shade.

Green.

White.

May to August.
zone 2.
Well-drained.

Strawberry-Lipstick
Fragaria x 'Lipstick'

6/12 in.
15/30 cm.

Sun or shade.

Dark green.

Reddish pink.

May to Sept.
Zone 2.
well-drained.

Strawberry-Pink Panda
Fragaria frel
'Pink Panda'

6/12 in.
15/30 cm.

Sun or shade.

Green.

Bright pink.

May to Sept.
Zone 2.
Well-drained.

Sundrops
Oenothera missourensis
Oenothera tetragona
Oenothera 'Siskiyou'

12/12 in.
30/30 cm.

Sun.

Green.

Yellow, pink.

June to August.
Zone 4.
Well-drained.

Sunflower
Helianthus
salicifolius

5/2 ft.
150/60 cm.

Sun.

Green.

Yellow.

August to September.
Zone 4.
Moist.

Sweet Rocket
Hesperis matronalis

36/12 in.
90/30 cm.

Sun or shade.

Green.

Purple.

June to July.
Zone 2.
Well-drained.

Sweet William
Dianthus barbatus

24/12 in.
60/30 cm.

Sun.

Green.

Red, pink, white.

June to August.
Zone 2.
Well-drained.

Sweet Woodruff
Galium odoratum

8/24 in.
20/60 cm.

Part shade.

Green.

White.

May to July.
Zone 3.
Moist.

Thymus-Thyme
Thymus x citriodorus
Thymus praecox
Thymus pseudolanuginosus
Thymus serpyllum

6/12 in.
15/30 cm.

Sun.

Gold, silver.
Green.

Gray.

Green.

Red, lavender.
White.

Pink.

Purple.

June to July.
Zone 3.
Well-drained.

Trollius-Globeflower
Trollius x cultorum

36/24 in.
90/60 cm.

Part shade.

Green.

Orange, yellow.

May to June.
Zone 2.
Moist.