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The database

Perennials

Herbaceous perennials that return year after year.

1,429 plants

Perennials in the database

Scarlet Larkspur, Red Delphinium (Delphinium Cardinale) — It sports lush, lobed green leaves and thrives in well-drained soil with full to partial sun exposure

Perennial

Scarlet Larkspur, Red Delphinium

Delphinium Cardinale

FullUSDA 11–11
Scarlet Monardella (Monardella Macrantha) — thriving in USDA zones 8-10

Ground cover

Scarlet Monardella

Monardella Macrantha

FullUSDA 6–10
Scarlet Monkey Flower (Mimulus Cardinalis) — making it an ideal addition to water features

Ground cover

Scarlet Monkey Flower

Mimulus Cardinalis

ShadeUSDA 9–10
Scented Geranium (Pelargonium (Scented Types)) — including bees and butterflies; regular watering is recommended

Perennial

Scented Geranium

Pelargonium (Scented Types)

FullUSDA 9–11
Scotch Moss (Sagina Subulata 'Aurea') — moss-like carpet of golden-green

Ground cover

Scotch Moss

Sagina Subulata 'Aurea'

FullUSDA 4–10
Sea Dahlia (Dahlia Maritima) — Adapted to sandy soils, it spans 18-24 inches in height and width, requiring full sun

Perennial

Sea Dahlia

Dahlia Maritima

FullUSDA 9–10
Sea Holly (Eryngium Maritimum) — A resilient coastal plant; it thrives in USDA hardiness zones 5 through 9

Perennial

Sea Holly

Eryngium Maritimum

FullUSDA 5–10
Sea Lavender (Limonium Perezii) — Its evergreen foliage provides year-round interest

Perennial

Sea Lavender

Limonium Perezii

FullUSDA 9–10
Sea Pink (Armeria Maritima) — it is ideal for rock gardens; with its tufted evergreen foliage that forms a dense, image 93

Ground cover

Sea Pink

Armeria Maritima

FullUSDA 3–10
Sea Squill (Drimia maritima) — In late summer to early fall, a singular spike ascends, reaching an imposing height of 4 to 5 feet

Bulb

Sea Squill

Drimia maritima

FullUSDA 8–10
Sea Thrift (Armeria Maritima 'Splendens Pink') — ground cover / perennial with pink and purple blooms

Ground cover

Sea Thrift

Armeria Maritima 'Splendens Pink'

FullUSDA 3–8
Seer's Sage (Salvia divinorum) — Seer's Sage (Salvia divinorum) is a psychoactive perennial

Herb

Seer's Sage

Salvia divinorum

ShadeUSDA 7–9
Self-Heal (Prunella grandiflora 'Loveliness') — commonly known as Self-Heal

Perennial

Self-Heal

Prunella grandiflora 'Loveliness'

FullUSDA 5–8
Sensation Sky Blue Sage (Salvia Nemorosa 'Sensation Sky Blue') — This drought-tolerant plant thrives in full sun to part shade, blooming from late spring to

Perennial

Sensation Sky Blue Sage

Salvia Nemorosa 'Sensation Sky Blue'

FullUSDA 3–8
September Charm Japanese Anemone (Anemone X Hybrida 'September Charm') — reaching 36-48 inches tall

Perennial

September Charm Japanese Anemone

Anemone X Hybrida 'September Charm'

FullUSDA 6–10
September Ruby New England Aster (Aster Novae-Angliae 'September Ruby') — it blooms in late summer to fall

Perennial

September Ruby New England Aster

Aster Novae-Angliae 'September Ruby'

FullUSDA 4–8
Serbian Bellflower (Campanula Poscharskyana) — This bellflower variant does best in USDA hardiness zones 3 through 8; this perennial reaches a height of 4-10

Ground cover

Serbian Bellflower

Campanula Poscharskyana

FullUSDA 3–9
Sessile-Leaf Bellwort (Uvularia Sessilifolia) — The plant possesses lance-shaped

Perennial

Sessile-Leaf Bellwort

Uvularia Sessilifolia

HalfUSDA 4–8
Shanghai Alum Root (Heuchera 'Shanghai') — silvery-purple leaves and robust mounding habit

Perennial

Shanghai Alum Root

Heuchera 'Shanghai'

HalfUSDA 4–9
Shasta Daisy (Leucanthemum X Superbum) — perennial with multi-colored and white and yellow blooms; weekly watering is recommended, with increased, image 71

Perennial

Shasta Daisy

Leucanthemum X Superbum

FullUSDA 5–10
Shellflower, Turtlehead (Chelone Lyonii) — rosy-pink blooms resembling turtle shells atop 2-3 feet tall stems with deep green

Perennial

Shellflower, Turtlehead

Chelone Lyonii

FullUSDA 3–9
Shell Ginger (Alpinia Zerumbet) — Its lush, green leaves add tropical flair, and it thrives in partial shade with rich, moist soil; the Shell, image 47

Perennial

Shell Ginger

Alpinia Zerumbet

HalfUSDA 8–11
Shirley Temple Peony (Paeonia 'Shirley Temple') — The Shirley Temple Peony (Paeonia 'Shirley Temple') is a cherished early-midseason bloomer

Perennial

Shirley Temple Peony

Paeonia 'Shirley Temple'

FullUSDA 3–8
Shooting Star (Dodecatheon Meadia) — annual / perennial for half; making it a charming and eco-friendly choice for their garden

Annual

Shooting Star

Dodecatheon Meadia

HalfUSDA 4–8

Photographs are credited on each plant’s page.