Helping You Become a More Successful Gardener
Gerald L. Klingaman
ALLIUM cepa 'Texas Grano 1015'
Garden Onion, Sweet Yellow Onion
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.
10 - 1
7 - 10
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
Full Sun, Partial Sun
1'-2' / 0.3m - 0.6m
6"-12" / 15.2cm - 30.5cm
Spring, Late Spring
Green, Light Green, Gray Green
Green, Yellow Green, Tan
Green, Gray Green
Edible, Herb / Vegetable
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