The database

Perennials

Herbaceous perennials that return year after year.

1,429 plants

Silver Knapweed (Centaurea Ragusina) — This drought-tolerant plant reaches up to 2 feet in height and spreads roughly 2-3 feet wide

Silver Knapweed

Centaurea Ragusina

Full · Zones 4–10

Silver Leaf Astelia (Astelia Chathamica) — is a striking New Zealand native with elegant

Silver Leaf Astelia

Astelia Chathamica

Half · Zones 9–10

Silver Plectranthus (Plectranthus Argentatus Longwood Silver) — Silver Plectranthus (Plectranthus argentatus 'Longwood Silver') is a striking, evergreen

Silver Plectranthus

Plectranthus Argentatus Longwood Silver

Half · Zones 9–10

Silver Sage (Salvia Argentea) — commonly known as Silver Sage

Silver Sage

Salvia Argentea

Full · Zones 5–10

Silver Spear Astelia (Astelia Chathamica 'Silver Spear') — Astelia chathamica 'Silver Spear' is an evergreen perennial known for its striking, silvery-blue

Silver Spear Astelia

Astelia Chathamica 'Silver Spear'

Half · Zones 9–10

Silver Thyme (Thymus Vulgaris 'Argenteus') — Silver Thyme (Thymus vulgaris 'Argenteus') is a compact

Silver Thyme

Thymus Vulgaris 'Argenteus'

Full · Zones 5–8

Sky Blue Aster (Symphyotrichum Oolentangiense) — Sky Blue Aster (Symphyotrichum oolentangiense) is a North American native perennial, thriving in zones 4-8

Sky Blue Aster

Symphyotrichum Oolentangiense

Full · Zones 6–10

Smartweed, Knotweed (Persicaria Microcephala 'Red Dragon') — Though not the main attraction

Smartweed, Knotweed

Persicaria Microcephala 'Red Dragon'

Full · Zones 6–9

Smooth Aster (Symphyotrichum Laeve 'Bluebird') — The Smooth Aster 'Bluebird' (Symphyotrichum laeve) is a vibrant North American perennial

Smooth Aster

Symphyotrichum Laeve 'Bluebird'

Full · Zones 3–8

Smooth Flax Lily (Dianella Longifolia) — Smooth Flax Lily (Dianella longifolia) is an attractive

Smooth Flax Lily

Dianella Longifolia

Full · Zones 8–11

Sneezeweed (Helenium 'Sahin Early Flower') — commonly called Sneezewood

Sneezeweed

Helenium 'Sahin Early Flower'

Full · Zones 3–9

Sneezeweed (Helenium Autumnale) — Sneezewood, Helenium autumnale, captivates with vibrant yellow to red blooms, reminiscent of a fiery sunset

Sneezeweed

Helenium Autumnale

Full · Zones 3–9

Snowbank False Aster (Boltonia Asteroides 'Snowbank') — daisy-like white blossoms from late summer into fall

Snowbank False Aster

Boltonia Asteroides 'Snowbank'

Half · Zones 3–8

Snowberry Tickseed (Coreopsis 'Snowberry') — Coreopsis 'Snowberry' is a hardy perennial featuring charming, creamy white blooms with burgundy centers

Snowberry Tickseed

Coreopsis 'Snowberry'

Full · Zones 4–9

Snowdrop Anemone (Anemone Sylvestris) — Its attractive foliage provides a lush backdrop in woodland gardens or along borders

Snowdrop Anemone

Anemone Sylvestris

Full · Zones 2–9

Snowdrop Wood-Sorrel (Oxalis Magellanica) — commonly known as Snowdrop Wood-Sorrel

Snowdrop Wood-Sorrel

Oxalis Magellanica

Full · Zones 7–9

Snowflake Bacopa (Sutera Cordata 'Snowflake') — Ideal for hanging baskets and borders

Snowflake Bacopa

Sutera Cordata 'Snowflake'

Full · Zones 9–11

Snow Hill Sage (Salvia X Sylvestris 'Snow Hill') — commonly known as Snow Hill Sage

Snow Hill Sage

Salvia X Sylvestris 'Snow Hill'

Full · Zones 6–10

Snow In Summer (Cerastium Tomentosum 'Yo Yo') — Snow in Summer (Cerastium tomentosum 'Yo Yo') features woolly

Snow In Summer

Cerastium Tomentosum 'Yo Yo'

Full · Zones 3–9

Snow In Summer (Cerastium Tomentosum) — is reminiscent of a fresh snowfall; from late spring to early summer, image 60

Snow In Summer

Cerastium Tomentosum

Full · Zones 3–9

Snow Queen Siberian Iris (Iris Sibirica 'Snow Queen') — Iris sibirica 'Snow Queen' is a hardy perennial

Snow Queen Siberian Iris

Iris Sibirica 'Snow Queen'

Full · Zones 2–9

Soap Plant (Chlorogalum Pomeridianum) — grass-like leaves up to 3 feet long

Soap Plant

Chlorogalum Pomeridianum

Full · Zones 6–10

Socialite® Triostar (Stromanthe sanguinea) — The Stromanthe sanguinea 'Triostar'

Socialite® Triostar

Stromanthe sanguinea

Half · Zones 10–11

Society Garlic (Tulbaghia Violacea 'Alba') — star-shaped white blooms and slender

Society Garlic

Tulbaghia Violacea 'Alba'

Full · Zones 10–11