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CISTUS x hybridus

Image of Cistus x hybridus

Michael Charters, www.calflora.net

Family

Cistaceae

Botanical Name

CISTUS x hybridus

Plant Common Name

Hybrid Rockrose

General Description

This snow-white flowered rockrose is a small enough shrub to fit into almost dry garden where its spring blossoms will literally glow under the moonlight. This hybrid is the result of crossing Cistus parviflorus with the smaller Cistus salvifolius to yield a modest-sized plant. Both parent species are native to southern Europe and adapted to the Mediterranean climate there. The mild wet winters combine with very long, dry summers to produce some of our most attractive drought-resistant plants.

This shrub bears gray green aromatic leaves that are rich in an oil once highly valued in the Old World perfume trade. This same oil makes these plants potentially volatile in high fire-hazard zones. The five-petalled flowers stand out strikingly against the leaves making the plant highly visible. This hybrid rock rose does not tolerate high humidity, desert heat or mountain cold. It can be shorter-lived than other shrubs, but its longevity improves with careful watering. Its modest size recommends it for grouping in a mass or an informal row in lieu of carpet roses and other thirsty shrubs. It adds color and evergreen leaves to a droughty, foundation planting or a touch of elegance to a casual xeriscape.

Characteristics

  • AHS Heat Zone

    8 - 1

  • USDA Hardiness Zone

    8 - 10

  • Sunset Zone

    7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Shrub

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    30"-36" / 76.2cm - 91.4cm

  • Width

    4'-5' / 1.2m - 1.5m

  • Bloom Time

    Early Spring, Spring, Late Spring

  • Native To

    Southern Europe

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Drought

  • Growth Rate

    Medium

  • Water Requirements

    Xeric/Desert, Drought Tolerant

  • Habit

    Cushion/Mound-forming

  • Seasonal Interest

    Spring

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    White

  • Foliage Color (Spring)

    Gray Green

  • Foliage Color (Summer)

    Gray Green

  • Foliage Color (Fall)

    Gray Green

  • Foliage Color (Winter)

    Gray Green

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    Yes

  • Bark or Stem Fragrant

    Yes

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Matte

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Foundation, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Butterflies

  • Self-Sowing

    No