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Perennials

Herbaceous perennials that return year after year.

1,429 plants

Perennials in the database

Hot Papaya Coneflower (Echinacea 'Hot Papaya') — double scarlet-orange blooms up to 3 inches across

Perennial

Hot Papaya Coneflower

Echinacea 'Hot Papaya'

FullUSDA 3–9
Hottentot Fig (Carpobrotus Edulis) — triangular leaves are a distinguishing characteristic

Ground cover

Hottentot Fig

Carpobrotus Edulis

FullUSDA 9–10
Houttuynia (Houttuynia Cordata 'Chamelion') — reaching a height and spread of 6-12 inches

Ground cover

Houttuynia

Houttuynia Cordata 'Chamelion'

FullUSDA 4–11
Hummingbird Trumpet (Zauschneria Garrettii Orange Carpet®) — making it an excellent selection for xeriscaping or water-wise landscapes

Perennial

Hummingbird Trumpet

Zauschneria Garrettii Orange Carpet®

FullUSDA 6–10
Hybrid Coral Bells (Heuchera Hybrids) — The Hybrid Coral Bells (Heuchera hybrids) are prized for their stunning

Ground cover

Hybrid Coral Bells

Heuchera Hybrids

HalfUSDA 4–9
Hybrid Halimiocistus (Halimiocistus Wintonensis) — low-growing shrub reaching around 12-18 inches tall and 24 inches wide

Perennial

Hybrid Halimiocistus

Halimiocistus Wintonensis

FullUSDA 7–9
Hybrid Helleborus Or Hellebore (Helleborus Hybrids) — scientifically recognized as Helleborus x hybridus

Perennial

Hybrid Helleborus Or Hellebore

Helleborus Hybrids

HalfUSDA 4–9
Hyperion Daylily (Hemerocallis 'Hyperion') — it's adaptable to various soil types

Perennial

Hyperion Daylily

Hemerocallis 'Hyperion'

FullUSDA 3–10
Hyssop-Leaf Thoroughwort (Eupatorium Hyssopifolium) — featuring Lanceolate leaves and clusters of petite

Perennial

Hyssop-Leaf Thoroughwort

Eupatorium Hyssopifolium

FullUSDA 4–8
Idaho Blue-Eyed Grass (Sisyrinchium Idahoense) — is a charming perennial with grassy foliage reaching up to 12 inches tall

Perennial

Idaho Blue-Eyed Grass

Sisyrinchium Idahoense

FullUSDA 5–7
Idaho Fescue (Festuca Idahoensis) — it performs optimally with full sun exposure but can endure partial shade

Grass

Idaho Fescue

Festuca Idahoensis

FullUSDA 6–10
Illumination Foxglove (Digiplexis Illumination 'Flame') — showcases vibrant peach-to-crimson blooms on stately spikes up to 36 inches tall

Perennial

Illumination Foxglove

Digiplexis Illumination 'Flame'

FullUSDA 8–8
Immortality Bearded Iris (Iris Bearded 'Immortality') — Reaching about 28-38 inches in height with a spread of 12-24 inches, it thrives in USDA zones 3-9

Perennial

Immortality Bearded Iris

Iris Bearded 'Immortality'

FullUSDA 3–10
Impatiens, Busy Lizzie (Impatiens Walleriana) — but care should be taken to avoid waterlogging

Annual

Impatiens, Busy Lizzie

Impatiens Walleriana

HalfUSDA 3–10
Inca Lily.Parrot Lily (Alstroemeria Psittacina) — Noteworthy for cut flowers

Perennial

Inca Lily.Parrot Lily

Alstroemeria Psittacina

FullUSDA 8–10
Incana Cranesbill (Geranium Incanum) — Hardy and drought-resistant, it thrives in full sun to partial shade and grows to a height of 6-12 inches

Ground cover

Incana Cranesbill

Geranium Incanum

FullUSDA 8–10
Indian Blanket (Gaillardia Pulchella) — the Indian Blanket is tolerant of poor soil conditions and is an excellent candidate for drought-prone, image 95

Perennial

Indian Blanket

Gaillardia Pulchella

FullUSDA 3–9
Indian Mock Strawberry (Duchesnea Indica) — Although the berries resemble the common strawberry; with each leaflet typically reaching a length of 1, image 102

Ground cover

Indian Mock Strawberry

Duchesnea Indica

FullUSDA 4–7
Indian Paintbrush (Castilleja Affinis) — This makes Castilleja affinis a suitable candidate for xeriscaping.<br><br>In a landscape design; this, image 152

Perennial

Indian Paintbrush

Castilleja Affinis

FullUSDA 9–10
Indian Pinks (Spigelia Marilandica) — herbaceous perennial valued for its striking display of tubular flowers; well-drained soil and can be planted in USDA

Perennial

Indian Pinks

Spigelia Marilandica

HalfUSDA 5–9
Indian Rice Grass (Achnatherum Hymenoides) — aquatic / perennial with white blooms

Aquatic

Indian Rice Grass

Achnatherum Hymenoides

FullUSDA 1–11
Indian Summer Gloriosa Daisy (Rudbeckia Hirta 'Indian Summer') — Growing 24-36 inches tall with a spread of 18-24 inches, its vibrant blossoms span up to 9

Annual

Indian Summer Gloriosa Daisy

Rudbeckia Hirta 'Indian Summer'

FullUSDA 3–10
Indigo Spires Sage (Salvia 'Indigo Spires') — is a vibrant perennial featuring long

Perennial

Indigo Spires Sage

Salvia 'Indigo Spires'

FullUSDA 7–11
Ingwersen's Variety Geranium (Geranium Mac. 'Ingwersen's Variety') — Originating from the Balkan region

Ground cover

Ingwersen's Variety Geranium

Geranium Mac. 'Ingwersen's Variety'

HalfUSDA 4–8

Photographs are credited on each plant’s page.