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BRASSICA oleracea 'McCormack's Green Glaze'

Image of Brassica oleracea 'McCormack's Green Glaze' (Acephala Group)

James H. Schutte

Family

Brassicaceae

Botanical Name

BRASSICA oleracea 'McCormack's Green Glaze'( Acephala Group)

Plant Common Name

Kale

General Description

A selection of the heirloom variety 'Green Glaze', this variety is noted not only for the unusual color and texture of its leaves but also for its resistance to heat, cold, bolting, and pests. A cool-season vegetable that resembles a loose-leaved cabbage, the collard has long been a mainstay of gardens and kitchens in the southern United States, but is increasing in popularity elsewhere. Typically grown as an annual, it traces its ancestry to Brassica oleracea, a fleshy-leaved, short-lived perennial from coastal areas of western and southern Europe.

This cultivar bears short-stemmed rosettes of upright, smooth, bright green leaves that have a slick waxy glaze. Mature plants stand waist-high. Unlike the original 'Green Glaze', this variety produces a high percentage of true-to-name seedlings. About 10 percent will have unglazed leaves. Plants may bolt in hot weather, becoming lanky and producing sprays of four-petaled lemon yellow flowers on tall stems. Plants that overwinter may bloom in spring.

Grow this variety in full sun and fertile, organic-rich garden soil with ample drainage. Although tolerant of subfreezing temperatures, plants will perish in severe cold. Sow seeds or transplants in the chill of early spring, or in mid to late summer for a fall crop. Plants mature 70 to 80 days after sowing, although the tender young leaves can be harvested earlier for salads. Often achieving their best flavor after frost, the relatively tough, pungently flavored mature leaves are best steamed or sauteed rather than raw. Hot weather and bolting cause leaves to become bitter.

Characteristics

  • AHS Heat Zone

    8 - 1

  • USDA Hardiness Zone

    7 - 11

  • Sunset Zone

    A1, A2, A3, H1, H2, 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

    Vegetable

  • Sun Exposure

    Full Sun

  • Height

    28"-36" / 71.1cm - 91.4cm

  • Width

    18"-24" / 45.7cm - 61.0cm

  • Bloom Time

    Spring, Late Spring, Early Summer

  • Native To

    Southern Europe, Western Europe, Mediterranean

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Salt

  • Growth Rate

    Fast

  • Water Requirements

    Average Water

  • Habit

    Rosette/Stemless

  • Seasonal Interest

    Spring, Fall, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Yellow

  • Fruit Color

    Brown

  • Foliage Color (Spring)

    Light Green

  • Foliage Color (Summer)

    Light Green

  • Foliage Color (Fall)

    Light Green

  • Foliage Color (Winter)

    Light Green

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    Yes

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Bold

  • Foliage Sheen

    Glossy

  • Evergreen

    Semi-Evergreen

  • Showy Bark

    No

Special Characteristics

  • Usage

    Bedding Plant, Container, Edging, Edible, Herb / Vegetable, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Butterflies

  • Self-Sowing

    Yes