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Drought-tolerant plants

Low- and very-low-water plants for dry gardens, Mediterranean climates, and water-wise design.

2,235 plants

Orange Ice Plant (Lampranthus Aurantiacus) — orange daisy-like flowers spanning up to 2 inches

Orange Ice Plant

Lampranthus Aurantiacus

Full · Zones 10–10

Orange King Bougainvillea (Bougainvillea 'Orange King') — The Bougainvillea 'Orange King' is a vibrant climber

Orange King Bougainvillea

Bougainvillea 'Orange King'

Full · Zones 9–10

Orange Rocket Barberry (Berberis Thunbergii 'Orange Rocket') — The Orange Rocket Barberry (Berberis thunbergii 'Orange Rocket') is a vibrant deciduous shrub

Orange Rocket Barberry

Berberis Thunbergii 'Orange Rocket'

Full · Zones 1–11

Orange Stonecrop (Sedum Nussbaumerianum) — allowing it to form attractive clumps

Orange Stonecrop

Sedum Nussbaumerianum

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

Orchid Cactus, Pond-Lily Cactus (Epiphyllum Hybrid) — commonly termed Orchid or Pond-Lily Cacti

Orchid Cactus, Pond-Lily Cactus

Epiphyllum Hybrid

Half · Zones 10–11

'Orchid Flash' Hardy Ice Plant (Delosperma hybrid) — Delosperma hybrid 'Orchid Flash' is a low

'Orchid Flash' Hardy Ice Plant

Delosperma hybrid

Full

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

Oregano

Origanum Vulgare

Full · Zones 4–8

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

Oregano

Origanum Libanoticum

Full · Zones 3–8

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

Oregon Boxwood (Paxistima Myrsinites) — Oregon Boxwood (Paxistima myrsinites) is an evergreen shrub perfect for low hedges or groundcover

Oregon Boxwood

Paxistima Myrsinites

Full · Zones 5–8

Oregon Grape (Berberis Nervosa) — Longleaf Barberry (Berberis nervosa) is an evergreen shrub, noted for its holly-like, leathery leaves

Oregon Grape

Berberis Nervosa

Half · Zones 5–10

Oregon Stonecrop (Sedum Oreganum) — Oregon Stonecrop, or Sedum oreganum, is a hardy, drought-tolerant succulent

Oregon Stonecrop

Sedum Oreganum

Full · Zones 4–9

Oregon White Oak (Quercus Garryana) — is a robust deciduous tree

Oregon White Oak

Quercus Garryana

Full · Zones 6–9

Organpipe Cactus (Stenocereus Thurberi) — The Organpipe Cactus (Stenocereus thurberi) is a distinctive

Organpipe Cactus

Stenocereus Thurberi

Full · Zones 9–10

Organ Pipe Cactus (Stenocereus Thurberi) — and yields edible red fruit

Organ Pipe Cactus

Stenocereus Thurberi

Full · Zones 9–11

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

Original Kobold Gayfeather

Liatris Spicata 'Kobold Original'

Full · Zones 2–9

Otay Manzanita (Arctostaphylos Otayensis) — The Otay Manzanita, Arctostaphylos otayensis, is a rare, evergreen shrub native to California's chaparral

Otay Manzanita

Arctostaphylos Otayensis

Full · Zones 11–11

Our Lord's Candle (Yucca Whipplei) — each reaching up to 3 feet long and edged with fibrous margins

Our Lord's Candle

Yucca Whipplei

Full · Zones 8–11

Ovens Wattle (Acacia Pravissima 'Golden Carpet') — The Ovens Wattle 'Golden Carpet' (Acacia pravissima) is a captivating, low-growing evergreen shrub

Ovens Wattle

Acacia Pravissima 'Golden Carpet'

Full · Zones 8–11

Overcup Oak (Quercus Lyrata) — The Overcup Oak (Quercus lyrata) is a resilient deciduous tree, prized for its rounded canopy and hardy nature

Overcup Oak

Quercus Lyrata

Full · Zones 7–11

Owl's Clover (Orthocarpus Purpurascens) — Owl's Clover (Orthocarpus purpurascens) is a striking annual

Owl's Clover

Orthocarpus Purpurascens

Full · Zones 3–10

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 Madrone (Arbutus Menziesii) — The Pacific Madrone (Arbutus menziesii) is an evergreen with striking features: glossy green leaves

Pacific Madrone

Arbutus Menziesii

Half · Zones 7–9