Species
Photo to come
Onion
Allium cepa
Bulbing allium (Spanish Sweet Yellow Utah — a long-day/intermediate sweet onion suited to northern Utah). Bulb size tracks leaf size at bulbing, so push early growth.
Sun
full sun
Water
moderate
Mature size
1–2 ft tops × bulb 2–4 in
Bloom
Bolting (flower stalk) is undesirable — stresses bulb size.
Hardiness
USDA Zones cool–season; day–length sensitive
Care guide
Quick ID
Spanish Sweet Yellow Utah — a sweet bulbing onion matched to our long-day latitude. Each leaf becomes a bulb ring, so the bigger the plant at bulbing, the bigger the onion.
Growing & Watering
Feed nitrogen and water steadily through early leaf growth; ease off as bulbs swell. Keep weed-free (shallow roots compete poorly).
Harvest
When ~half the tops flop and necks soften, lift and cure in a dry, airy, shaded spot 1–2 weeks before storing.
In my garden
G2‘Spanish Sweet Yellow Utah’
| Sun | Full sun |
| Soil | sandy loam, fast percolation |
| Water source | Secondary |
| Hardiness here | Zone 7 |
2026-05-23
Planted · ~0 yrs
What I've done here
- 2026-05-23Direct-seeded (4 packets)