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CROCUS sieberi 'Tricolor'

Image of Crocus sieberi ssp. sublimis 'Tricolor'

Debbie Schilling

Family

Iridaceae

Botanical Name

CROCUS sieberi ssp. sublimis 'Tricolor'

Plant Common Name

Sieber's Crocus, Tricolor Sieber's Crocus

General Description

Opening its winsome blooms with the first hints of spring, 'Tricolor' is an heirloom cultivar dating from the early twentieth century. It is a selection of Crocus sieberi ssp. sublimis, native to southeastern Europe and Crete.

Growing from a small bulb-like storage organ known as a corm, this diminutive herbaceous perennial sends up one to three lilac-blue flowers in winter or early spring, just as the grass-like green leaves appear. Borne singly on short, erect, stalk-like floral tubes, the six-"petaled" flowers open wide in bright sun to display a luminous gold, white-rimmed throat. The orange-yellow anthers and styles add to the display. Once flowering ends, the foliage remains for several more weeks to gather nourishment for the bulbs.

Grow this delightful crocus in full sun and fertile, well-drained soil. Plant the corms in late summer or early fall at a depth of three or four times their height. Plants need several weeks of winter chill to grow and flower well. This little beauty is perfect for clustering in the rock garden or massing in the foreground of perennial beds. It also is good for forcing in containers.

Characteristics

  • AHS Heat Zone

    8 - 1

  • USDA Hardiness Zone

    5 - 8

  • Sunset Zone

    1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Bulb or Corm or Tuber

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    2"-4" / 5.1cm - 10.2cm

  • Width

    2"-3" / 5.1cm - 7.6cm

  • Bloom Time

    Early Spring, Winter, Late Winter

  • Native To

    Southern Europe, Mediterranean

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Tolerances

    Drought

  • Growth Rate

    Medium

  • Water Requirements

    Average Water

  • Habit

    Clump-Forming

  • Seasonal Interest

    Spring, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    White, Yellow, Blue Violet

  • Flower Color Modifier

    Multi-Color

  • Foliage Color (Spring)

    Green

  • Foliage Color (Winter)

    Green

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Fine

  • Foliage Sheen

    Matte

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Alpine, Container, Mixed Border, Rock Garden / Wall, Wildflower

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    Yes