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ALLIUM cepa 'Texas Grano 1015'

Image of Allium cepa 'Texas Grano 1015'

Gerald L. Klingaman

Family

Liliaceae

Botanical Name

ALLIUM cepa 'Texas Grano 1015'

Plant Common Name

Garden Onion, Sweet Yellow Onion

General Description

This disease-resistant "super-sweet" onion is one of several developed for Texas commercial growers by the Texas Agricultural Experiment Station in Weslaco. It is among the most widely grown and sold onion varieties in the United States.

The garden onion is a herbaceous biennial commonly grown as an annual vegetable. Pale hollow green leaves and long flower stems arise from bulbs with papery outer coverings. This variety develops spherical, yellow-skinned, softball-sized onions that keep well in storage. Their sweet white flesh may be eaten raw or cooked.

Garden onions are categorized according to the day length at which they form bulbs. This short-day cultivar requires relatively few hours of daylight (10-12). Its name alludes to October 15, its ideal planting time in the Southwest United States. Although propagated by open-pollinated seed, 'Texas Grano 1015Y' is often planted out as young seedlings, or "sets." Early-fall plantings of 'Texas Grano 1015Y' mature in spring, a week or two earlier than most other short-day sweet onions. Spring-sown crops mature in approximately 175 days.

Garden onions require full sun and regular water. Grow them in loose, rich, well-drained soil. Plant onion sets just below the surface, with the neck showing. When most of the leaves are in decline, dig the bulbs and dry them in a shady well-ventilated place for several days. Soils rich in sulfur make the onion bulbs develop more acidic, less sweet flavor. This variety is resistant to pink root disease.

Characteristics

  • AHS Heat Zone

    10 - 1

  • USDA Hardiness Zone

    7 - 10

  • 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, Partial Sun

  • Height

    1'-2' / 0.3m - 0.6m

  • Width

    6"-12" / 15.2cm - 30.5cm

  • Bloom Time

    Spring, Late Spring

  • Native To

    Central Asia

Growing Conditions

  • Soil pH

    Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Growth Rate

    Medium

  • Water Requirements

    Average Water

  • Habit

    Upright/Erect

  • Seasonal Interest

    Spring, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    White

  • Foliage Color (Spring)

    Green, Light Green, Gray Green

  • Foliage Color (Summer)

    Green, Yellow Green, Tan

  • Foliage Color (Fall)

    Green, Gray Green

  • Foliage Color (Winter)

    Green, 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

    Semi-Evergreen

  • Showy Bark

    No

Special Characteristics

  • Usage

    Edible, Herb / Vegetable

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    Yes