The database

Perennials

Herbaceous perennials that return year after year.

1,429 plants

Opening Act Blush Phlox (Phlox 'Opening Act Blush') — The Opening Act Blush Phlox (Phlox 'Opening Act Blush') is a compact

Opening Act Blush Phlox

Phlox 'Opening Act Blush'

Full · Zones 3–8

'Opening Act Pink-a-Dot' Hybrid Phlox (Phlox hybrid) — It grows 22-26 inches tall and spreads 30-36 inches with an upright, mounded presence

'Opening Act Pink-a-Dot' Hybrid Phlox

Phlox hybrid

Full · Zones 3–8

Orange African Daisy (Arctotis Hybrids 'Orange') — The Arctotis hybrid 'Orange'

Orange African Daisy

Arctotis Hybrids 'Orange'

Full · Zones 8–10

Orange Alstroemeria (Alstroemeria Hybrids Orange) — also known as Peruvian Lily

Orange Alstroemeria

Alstroemeria Hybrids Orange

Full · Zones 8–10

Orange Clock Vine (Thunbergia Gregorii) — fast-growing perennial with striking orange flowers resembling open-faced clocks

Orange Clock Vine

Thunbergia Gregorii

Full · Zones 9–11

Orange Freesia (Freesia 'Orange') — Freesia 'Orange' adds vibrant, fiery tones with sweetly fragrant, funnel-shaped blossoms

Orange Freesia

Freesia 'Orange'

Full · Zones 3–10

Orange Gazania (Gazania Orange) — The Orange Gazania (Gazania rigens)

Orange Gazania

Gazania Orange

Full · Zones 9–9

Orange Libertia (Libertia Peregrinans) — commonly known as Orange Libertia

Orange Libertia

Libertia Peregrinans

Full · Zones 8–10

Orange Monkey Flower (Mimulus 'Orange') — commonly known as Orange Monkey Flower

Orange Monkey Flower

Mimulus 'Orange'

Full · Zones 9–10

Orange Or Brown Sedge (Carex Testacea) — commonly known as Orange or Brown Sedge

Orange Or Brown Sedge

Carex Testacea

Full · Zones 6–11

Orange Watsonia (Watsonia Strains Orange) — The Orange Watsonia (Watsonia meriana var

Orange Watsonia

Watsonia Strains Orange

Full · Zones 9–10

Orbit Bronze Stonecrop (Sedum 'Orbit Bronze') — The Sedum 'Orbit Bronze,' or Orbit Bronze Stonecrop

Orbit Bronze Stonecrop

Sedum 'Orbit Bronze'

Full · Zones 3–9

Oregano (Origanum Libanoticum) — Tolerant of drought once established, it thrives in well-drained soil

Oregano

Origanum Libanoticum

Full · Zones 3–8

Oregano (Origanum Vulgare) — Oregano (Origanum vulgare) is a resilient perennial herb

Oregano

Origanum Vulgare

Full · Zones 4–8

Oregano 'Santa Cruz' (Origanum X Hybridum 'Santa Cruz') — commonly called Oregano 'Santa Cruz'

Oregano 'Santa Cruz'

Origanum X Hybridum 'Santa Cruz'

Full · Zones 7–9

Oriental Poppy (Papaver Orientale) — with vibrant hues of red to orange and a striking dark center

Oriental Poppy

Papaver Orientale

Full · Zones 3–9

Origami Red And White Columbine (Aquilegia 'Origami Red And White') — a perennial known for its striking bicolored flowers

Origami Red And White Columbine

Aquilegia 'Origami Red And White'

Half · Zones 3–10

Original Kobold Gayfeather (Liatris Spicata 'Kobold Original') — is a compact perennial featuring dense

Original Kobold Gayfeather

Liatris Spicata 'Kobold Original'

Full · Zones 2–9

Orion Cranesbill (Geranium 'Orion') — boasts vibrant blue flowers with a white eye

Orion Cranesbill

Geranium 'Orion'

Full · Zones 2–10

Othello Leopard Plant (Ligularia Dentata 'Othello') — 'Othello' Leopard Plant (Ligularia dentata 'Othello') thrives in partial to full shade

Othello Leopard Plant

Ligularia Dentata 'Othello'

Shade · Zones 4–8

Oxeye Daisy (Chrysanthemum Leucanthemum) — The Ox-Eye Daisy (Chrysanthemum leucanthemum)

Oxeye Daisy

Chrysanthemum Leucanthemum

Full · Zones 3–10

Pacific Bleeding Heart (Dicentra Formosa) — The Pacific Bleeding Heart (Dicentra formosa) is a perennial native to the Pacific Northwest

Pacific Bleeding Heart

Dicentra Formosa

Half · Zones 3–8

Pacific Coast Irises (Iris Pacific Coast Hybrids) — Pacific Coast Irises (Iris Pacific Coast Hybrids) are perennial plants ideal for U.S

Pacific Coast Irises

Iris Pacific Coast Hybrids

Full · Zones 9–10

Pacific Giants (Strain) Delphinium (Delphinium Elatum 'Pacific Giants') — Its vibrant blooms in shades of blue

Pacific Giants (Strain) Delphinium

Delphinium Elatum 'Pacific Giants'

Full · Zones 3–10