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ALLIUM porrum 'Tadorna'

Image of Allium porrum 'Tadorna'

James H. Schutte



Botanical Name

ALLIUM porrum 'Tadorna'

Plant Common Name

Garden Leek

Special Notice

This entry has yet to be reviewed and approved by L2G editors.

General Description

Delicate, sweet and lacking the hot acidic taste of onions, Tadorna garden leek is a must for the herb and vegetable garden! This selection is has very dark blue-green leaves and is known for its holding qualities once mature in the cool soils of fall and winter, if not frozen. Usually grown as an annual, it is a slow-growing biennial that isn't affected by diseases that afflict onions. When 'Tadorna' flowers (in the second year), it produces pinkish white flowers in the spring. Small bulbils form in the balled flower clusters and can be removed and placed in soil. The garden leek is native to southern Europe and western Asia where it thrives with rich soil, full sun, and cool summers.

Plant the seeds or young bulbils in full sun and fertile, moist, well drained soil at a depth of two or three times their width. Leeks can be grown in hot climates if given afternoon shade and cool soil. They require regular water to thrive. In cold winter areas, plant leek transplants in the early spring to harvest them late as long as soil does not fully harden with frost. As the plant grows, keep soil mounded around the stem up to the lowest leaf joint. This process, called blanching, will keep the thick stem of 'Tadorna' white and mild-flavored. Dig up the stems when they are half an inch to two inches thick (one to six centimeters), or after about 120-130 days. Any small plantlets of uprooted at harvest can be immediately replanted.

Grow 'Tadorna' in the vegetable garden where its erect, attractive foliage can be used ornamentally while growing. It can be harvested at any time for culinary use. The small leaves and stems may be chopped and used like scallions. Larger slices of the leek stem may be boiled, fried or eaten raw in salads. The mild flavor perhaps could be described as a combination of cucumber and hints of sweet onion, quite common in Welsh and French cuisines. In Wales the garden leek is a national floral emblem and can be used as both a fresh cutflower or dried filler.


  • AHS Heat Zone

    7 - 1

  • USDA Hardiness Zone

    6 - 9

  • Sunset Zone

    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

    Bulb or Corm or Tuber

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    1'-3' / 0.3m - 0.9m

  • Width

    1'-2' / 0.3m - 0.6m

  • Bloom Time

    Spring, Late Spring

  • Native To

    Europe, Southern Europe, Russia/Siberia, Northern Africa, Central Asia, Western Asia

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage


  • Soil type

    Loam, Sand

  • Tolerances


  • Growth Rate


  • Water Requirements

    Average Water

  • Habit


  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest


  • Flower Color


  • Fruit Color

    Yellow Green, Tan

  • Foliage Color (Spring)

    Green, Blue Green

  • Foliage Color (Summer)

    Blue Green, Dark Green

  • Foliage Color (Fall)

    Blue Green, Dark Green

  • Foliage Color (Winter)

    Blue Green, Dark Green, Yellow Green

  • Fragrant Flowers


  • Fragrant Fruit


  • Fragrant Foliage


  • Bark or Stem Fragrant


  • Flower Petal Number


  • Repeat Bloomer


  • Showy Fruit


  • Edible Fruit


  • Showy Foliage


  • Foliage Texture


  • Foliage Sheen


  • Evergreen


  • Showy Bark


Special Characteristics

  • Usage

    Container, Cutflower, Dried Flower/Everlasting, Edible, Herb / Vegetable

  • Sharp or Has Thorns


  • Invasive


  • Attracts

    Hummingbirds, Butterflies

  • Self-Sowing