The database

Perennials

Herbaceous perennials that return year after year.

1,429 plants

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

Hot Papaya Coneflower

Echinacea 'Hot Papaya'

Full · Zones 3–9

Hottentot Fig (Carpobrotus Edulis) — is a ground-hugging succulent with vibrant daisy-like flowers spanning up to 4 inches wide

Hottentot Fig

Carpobrotus Edulis

Full · Zones 9–10

Houttuynia (Houttuynia Cordata 'Chamelion') — low-growing perennial featuring heart-shaped leaves splashed with hues of red

Houttuynia

Houttuynia Cordata 'Chamelion'

Full · Zones 4–11

Hummingbird Trumpet (Zauschneria Garrettii Orange Carpet®) — It forms lush mats up to 4 inches tall and 30 inches wide

Hummingbird Trumpet

Zauschneria Garrettii Orange Carpet®

Full · Zones 6–10

Hybrid Coral Bells (Heuchera Hybrids) — The Hybrid Coral Bells (Heuchera hybrids) are prized for their stunning

Hybrid Coral Bells

Heuchera Hybrids

Half · Zones 4–9

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

Hybrid Halimiocistus

Halimiocistus Wintonensis

Full · Zones 7–9

Hybrid Helleborus Or Hellebore (Helleborus Hybrids) — Hybrid Hellebores (Helleborus hybrids) are cherished for their early blooming

Hybrid Helleborus Or Hellebore

Helleborus Hybrids

Half · Zones 4–9

Hyperion Daylily (Hemerocallis 'Hyperion') — is a perennial favorite with fragrant

Hyperion Daylily

Hemerocallis 'Hyperion'

Full · Zones 3–10

Hyssop-Leaf Thoroughwort (Eupatorium Hyssopifolium) — The Hyssop-leaf Thoroughwort (Eupatorium hyssopifolium) is a perennial native to North America

Hyssop-Leaf Thoroughwort

Eupatorium Hyssopifolium

Full · Zones 4–8

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

Idaho Blue-Eyed Grass

Sisyrinchium Idahoense

Full · Zones 5–7

Idaho Fescue (Festuca Idahoensis) — Perfect for water-wise gardens, it tolerates drought once established and prefers full sun to partial shade

Idaho Fescue

Festuca Idahoensis

Full · Zones 6–10

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

Illumination Foxglove

Digiplexis Illumination 'Flame'

Full · Zones 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

Immortality Bearded Iris

Iris Bearded 'Immortality'

Full · Zones 3–10

Impatiens, Busy Lizzie (Impatiens Walleriana) — Impatiens walleriana, commonly known as Busy Lizzie, is a vibrant, shade-loving annual

Impatiens, Busy Lizzie

Impatiens Walleriana

Half · Zones 3–10

Inca Lily.Parrot Lily (Alstroemeria Psittacina) — commonly known as Parrot Lily or Inca Lily

Inca Lily.Parrot Lily

Alstroemeria Psittacina

Full · Zones 8–10

Incana Cranesbill (Geranium Incanum) — Incana Cranesbill (Geranium incanum) is a low-growing, sprawling perennial, ideal for ground cover

Incana Cranesbill

Geranium Incanum

Full · Zones 8–10

Indian Blanket (Gaillardia Pulchella) — is a vibrant perennial often grown as an annual

Indian Blanket

Gaillardia Pulchella

Full · Zones 3–9

Indian Mock Strawberry (Duchesnea Indica) — It produces small red fruits resembling true strawberries

Indian Mock Strawberry

Duchesnea Indica

Full · Zones 4–7

Indian Paintbrush (Castilleja Affinis) — which are brilliantly coloured in shades of red

Indian Paintbrush

Castilleja Affinis

Full · Zones 9–10

Indian Pinks (Spigelia Marilandica) — Spigelia marilandica, commonly known as Indian Pink, is a vibrant perennial native to the southeastern U.S

Indian Pinks

Spigelia Marilandica

Half · Zones 5–9

Indian Rice Grass (Achnatherum Hymenoides) — Indian Ryegrass, Achnatherum hymenoides, is a perennial bunchgrass standing 1-2 feet tall

Indian Rice Grass

Achnatherum Hymenoides

Full · Zones 1–11

Indian Summer Gloriosa Daisy (Rudbeckia Hirta 'Indian Summer') — golden-yellow blooms with a distinct dark brown center

Indian Summer Gloriosa Daisy

Rudbeckia Hirta 'Indian Summer'

Full · Zones 3–10

Indigo Spires Sage (Salvia 'Indigo Spires') — is a vibrant perennial featuring long

Indigo Spires Sage

Salvia 'Indigo Spires'

Full · Zones 7–11

Ingwersen's Variety Geranium (Geranium Mac. 'Ingwersen's Variety') — Geranium macrorrhizum 'Ingwersen's Variety' is a robust perennial

Ingwersen's Variety Geranium

Geranium Mac. 'Ingwersen's Variety'

Half · Zones 4–8