The database

Drought-tolerant plants

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

2,235 plants

Rizzini's Justicia (Justicia Rizzinii) — tropical perennial known for its fiery red to orange tubular flowers which resemble lit firecrackers

Rizzini's Justicia

Justicia Rizzinii

Full · Zones 8–11

Robust Hedgehog Cactus (Echinocereus Fasciculatus) — presents a cluster of spiny stems

Robust Hedgehog Cactus

Echinocereus Fasciculatus

Full · Zones 8–10

Robyn Gordon Grevillea (Grevillea 'Robyn Gordon') — Grevillea 'Robyn Gordon' is an evergreen shrub

Robyn Gordon Grevillea

Grevillea 'Robyn Gordon'

Full · Zones 9–11

Rock Cotoneaster (Cotoneaster Horizontalis) — Rock Cotoneaster (Cotoneaster horizontalis) is a deciduous shrub with a distinctive herringbone pattern

Rock Cotoneaster

Cotoneaster Horizontalis

Full · Zones 4–10

Rock Purslane (Calandrinia Grandiflora) — Rock Purslane (Calandrinia grandiflora) is a vibrant succulent that features fleshy

Rock Purslane

Calandrinia Grandiflora

Full · Zones 3–10

Rockrose (Cistus 'Mickie') — white flowers in the garden

Rockrose

Cistus 'Mickie'

Full · Zones 8–10

Rocky Mountain Juniper (Juniperus Scopulorum) — reaching heights of 30-40 feet and spreads up to 3-15 feet

Rocky Mountain Juniper

Juniperus Scopulorum

Full · Zones 4–11

Rocky Point Ice Plant (Malephora Lutea) — Sporting succulent green foliage, it reaches 6-8 inches tall and spreads up to 24 inches

Rocky Point Ice Plant

Malephora Lutea

Full · Zones 8–11

Roemer's Sage (Salvia Roemeriana) — Cedar Sage (Salvia roemeriana) is a vibrant, shade-loving perennial

Roemer's Sage

Salvia Roemeriana

Full · Zones 3–8

Rooiwortel (Bulbine Latifolia) — This drought-tolerant perennial thrives in USDA zones 9-11

Rooiwortel

Bulbine Latifolia

Full · Zones 8–11

Rosea Eucalyptus (Eucalyptus Leucoxylon 'Rosea') — medium-sized tree reaching up to 30 feet tall

Rosea Eucalyptus

Eucalyptus Leucoxylon 'Rosea'

Full · Zones 9–11

Rosea Ice Plant (Drosanthemum Floribundum) — The Rosea Ice Plant, Drosanthemum floribundum, is a vibrant perennial groundcover

Rosea Ice Plant

Drosanthemum Floribundum

Full · Zones 9–11

Rosea Silk Tree (Albizia Julibrissin 'Rosea') — The Rosea Silk Tree (Albizia julibrissin 'Rosea') adds a touch of elegance with its fluffy

Rosea Silk Tree

Albizia Julibrissin 'Rosea'

Full · Zones 7–11

Rosea Yarrow (Achillea Millefolium 'Rosea') — boasts delicate pink flower clusters atop fern-like foliage

Rosea Yarrow

Achillea Millefolium 'Rosea'

Full · Zones 3–10

Rose Mallee (Eucalyptus Rhodantha) — rose-like flowers and silvery-blue foliage

Rose Mallee

Eucalyptus Rhodantha

Full · Zones 8–8

Rosemary (Rosmarinus Officinalis) — Rosemary (Rosmarinus officinalis) is a fragrant

Rosemary

Rosmarinus Officinalis

Full · Zones 7–9

Rosemary Grevillea (Grevillea Rosmarinifolia) — Grevillea rosmarinifolia, commonly known as Rosemary Grevillea, is an evergreen shrub native to Australia

Rosemary Grevillea

Grevillea Rosmarinifolia

Full · Zones 8–10

Rose Meadow Salvia (Salvia Nemorosa 'Rose Marvel') — The Rose Meadow Salvia, Salvia nemorosa 'Rose Marvel', boasts the largest flowers of its kind

Rose Meadow Salvia

Salvia Nemorosa 'Rose Marvel'

Full · Zones 4–9

Rose Muhly (Muhlenbergia Reverchonii) — Rose Muhly, Muhlenbergia reverchonii, is a perennial grass standing 2-3 ft tall, with a 1.5-2 ft spread

Rose Muhly

Muhlenbergia Reverchonii

Full · Zones 5–10

Rose Red Stone Crop (Sedum Spectabile 'Neon') — The Sedum spectabile 'Neon', commonly known as Rose Red Stone Crop, is a vibrant perennial succulent

Rose Red Stone Crop

Sedum Spectabile 'Neon'

Full · Zones 3–10

Rough Blazingstar (Liatris Aspera) — Rough Blazingstar (Liatris aspera) is a hardy perennial

Rough Blazingstar

Liatris Aspera

Full · Zones 3–9

Roundleaf Alumroot (Heuchera Cylindrica) — is a perennial prized for its robust mounds of round

Roundleaf Alumroot

Heuchera Cylindrica

Half · Zones 4–9

Round-Leaved Tea Tree (Leptospermum Rotundifolium) — evergreen shrub reaching heights of around 5 feet with a similar spread

Round-Leaved Tea Tree

Leptospermum Rotundifolium

Full · Zones 9–11

Royal Beard Tongue (Penstemon Spectabilis) — The Royal Beard Tongue (Penstemon spectabilis) is an eye-catching perennial native to California

Royal Beard Tongue

Penstemon Spectabilis

Full · Zones 8–11