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The database

Perennials

Herbaceous perennials that return year after year.

1,429 plants

Perennials in the database

Bluebunch Wheat Grass (Pseudoroegneria Spicata) — depending on its environment

Grass

Bluebunch Wheat Grass

Pseudoroegneria Spicata

FullUSDA 3–7
Blue Cohosh (Caulophyllum Thalictroides) — Blue Cohosh, Caulophyllum thalictroides, is a shade-loving perennial native to woodland areas

Perennial

Blue Cohosh

Caulophyllum Thalictroides

HalfUSDA 3–8
Blue Cross Gentian (Gentiana Cruciata 'Blue Cross') — The Gentiana cruciata 'Blue Cross' is a perennial boasting vivid

Perennial

Blue Cross Gentian

Gentiana Cruciata 'Blue Cross'

HalfUSDA 3–7
Blue Danube Stokes Aster (Stokesia Laevis 'Blue Danube') — scientifically named Stokesia laevis 'Blue Danube'

Ground cover

Blue Danube Stokes Aster

Stokesia Laevis 'Blue Danube'

FullUSDA 5–9
Blue Danube Wild Hycinth (Camassia Leichtlinii 'Blue Danube') — Preferring full sun to part shade

Bulb

Blue Danube Wild Hycinth

Camassia Leichtlinii 'Blue Danube'

FullUSDA 3–9
Blue Dracaena (Cordyline Indivisa) — the Blue Dracaena thrives in areas with partial shade

Perennial

Blue Dracaena

Cordyline Indivisa

FullUSDA 8–11
Blue-Eyed Grass (Sisyrinchium Angustifolium) — commonly known as Blue-Eyed Grass

Perennial

Blue-Eyed Grass

Sisyrinchium Angustifolium

FullUSDA 4–9
Blue-Eyed Grass (Sisyrinchium Bellum) — In late spring to early summer; its compact size also makes Sisyrinchium bellum suitable for container gardening

Perennial

Blue-Eyed Grass

Sisyrinchium Bellum

FullUSDA 8–11
Blue-Eyed Mary, Creeping Forget-Me- (Omphalodes Verna) — requiring minimal upkeep beyond occasional watering during dry periods.<br><br>When, image 96

Ground cover

Blue-Eyed Mary, Creeping Forget-Me-

Omphalodes Verna

HalfUSDA 6–9
Blue Flag (Iris Versicolor) — Iris versicolor, or Blue Flag, is a striking perennial native to North America; prefers full to partial sun and wet conditions

Perennial

Blue Flag

Iris Versicolor

HalfUSDA 8–10
Blue Fortune Anise Hyssop (Agastache Foeniculum 'Blue Fortune') — Blue Fortune Anise Hyssop (Agastache foeniculum 'Blue Fortune') is a perennial herb standing

Perennial

Blue Fortune Anise Hyssop

Agastache Foeniculum 'Blue Fortune'

FullUSDA 5–10
Blue Glitter Sea Holly (Eryngium Planum 'Blue Glitter') — adding texture and color to borders and rock gardens

Perennial

Blue Glitter Sea Holly

Eryngium Planum 'Blue Glitter'

FullUSDA 4–8
Blue Hill Sage (Salvia Nemorosa 'Blue Hill') — This drought-tolerant plant offers prolonged summer blooms, attracting pollinators while being deer resistant

Perennial

Blue Hill Sage

Salvia Nemorosa 'Blue Hill'

FullUSDA 4–8
Blue Ice Amsonia (Amsonia Tab. 'Blue Ice') — known for its compact and robust form

Perennial

Blue Ice Amsonia

Amsonia Tab. 'Blue Ice'

FullUSDA 4–9
Blue Ivory Hosta (Hosta 'Blue Ivory') — Reaching around 16 inches in height and spreading up to 30 inches, it's ideal for shade gardens

Perennial

Blue Ivory Hosta

Hosta 'Blue Ivory'

HalfUSDA 3–9
Blue Medusa Rush (Juncus Inflexus 'Afro') — flaunting steel-blue spirals that resemble Medusa's serpentine locks

Perennial

Blue Medusa Rush

Juncus Inflexus 'Afro'

FullUSDA 8–11
Blue Mist Flower (Eupatorium Coelestinum) — Typically reaching a mature size of 2 to 3 feet tall and spreading approximately the same in width

Perennial

Blue Mist Flower

Eupatorium Coelestinum

FullUSDA 4–8
Blue Mist Shrub, Blue Beard (Caryopteris X Clandonensis) — its compact size and alluring color make it an ideal candidate for borders

Perennial

Blue Mist Shrub, Blue Beard

Caryopteris X Clandonensis

FullUSDA 5–9
Blue Mouse Ears Hosta (Hosta 'Blue Mouse Ears') — Ideal as a border plant or in rock gardens, it grows 6 inches tall and 12 inches wide

Perennial

Blue Mouse Ears Hosta

Hosta 'Blue Mouse Ears'

HalfUSDA 3–9
Blue My Mind® Dwarf Morning Glory (Evolvulus) — Evolvulus Blue My Mind® is a heat-loving annual with true blue

Perennial

Blue My Mind® Dwarf Morning Glory

Evolvulus

FullUSDA 9–11
Blue Oat Grass (Helictotrichon Sempervirens) — fountain-like silhouette.<br><br>Drought-resistant and hardy in USDA zones 4 through 8

Grass

Blue Oat Grass

Helictotrichon Sempervirens

FullUSDA 3–10
Blue Or False Sea Holly (Eryngium Planum) — This drought-tolerant plant thrives in full sun and well-drained soil; including bees and butterflies

Perennial

Blue Or False Sea Holly

Eryngium Planum

FullUSDA 2–9
Blue Peach-Leaved Bellflower (Campanula Persicifolia 'Blue') — boasts striking sky-blue flowers on slender stems

Perennial

Blue Peach-Leaved Bellflower

Campanula Persicifolia 'Blue'

FullUSDA 3–10
Blue Sage (Salvia Azurea Grandiflora) — This variety of Blue Sage can reach an impressive 3 to 5 feet in height and spreads out 2 to 3 feet

Perennial

Blue Sage

Salvia Azurea Grandiflora

FullUSDA 5–9

Photographs are credited on each plant’s page.