SproutSmart
SproutSmart™ Intelligent Garden Sowing

Tropeana Lunga

Onion
Zone 10b Save Garden

Planting Schedule

Add Tropeana Lunga to your garden to build a schedule and get reminders.
Botanical illustration of Tropeana Lunga
90d to harvest

Sweetly aromatic and richly red from shoulder to stem, Tropeana Lunga forms long, elegant red onions with a gentle bite that softens into mellow sweetness. The flesh is crisp and juicy with fine, tight rings, making each bulb feel substantial yet refined in the hand. Grow Tropeana Lunga for standout red color and dependable 90-day maturity—ideal for bold, colorful onion-forward dishes, from roasting to fresh slicing and vibrant pickling.

Crop Dates

Growing note: Frost-free Zone 10b supports continuous outdoor production.
MilestoneDate
ClimateFrost-Free Climate
Growing ApproachContinuous Production

Crop Details

TraitValue
Days to Maturity90
Sun RequirementsFull SunFull sun
Growth HabitUpright
Support NeededNone
Planting DepthNormal
Germination Temp (°F)60
Min Soil Temp (°F)45
Min Night Temp (°F)28
Harden Off (days)Not Required

Today's Conditions

Outdoor planting for Tropeana Lunga in Zone 10b typically begins around throughout the growing season. Wait until soil reaches at least 45°F before transplanting Tropeana Lunga.

Garden Alerts

Frost-free Zone 10b supports continuous outdoor production.

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Frequently Asked Questions

What soil moisture schedule should I follow for onion (Allium cepa) during the main growing phase?
Keep the soil consistently moist but not waterlogged from establishment through bulb formation (roughly weeks 4–10 after planting). Water deeply about 1–2 times per week, increasing frequency during hot, windy weather, so the top 1–2 inches dry slightly between waterings. Once bulbs begin to size up, reduce watering a bit to prevent rot, but don’t let plants fully dry out or bulb growth will stall.
How can I tell when onion (Allium cepa) is ready to harvest?
Harvest when about half of the tops have fallen over and the remaining leaves are starting to dry and yellow, typically near the ~90-day mark. Stop watering a week before harvest so necks dry down and bulbs cure better. Lift gently (don’t pull hard), then cure the bulbs in a warm, airy spot until necks feel tight and papery skins are set.
Botanical illustration of Tropeana Lunga

Sweetly aromatic and richly red from shoulder to stem, Tropeana Lunga forms long, elegant red onions with a gentle bite that softens into mellow sweetness. The flesh is crisp and juicy with fine, tight rings, making each bulb feel substantial yet refined in the hand. Grow Tropeana Lunga for standout red color and dependable 90-day maturity—ideal for bold, colorful onion-forward dishes, from roasting to fresh slicing and vibrant pickling.

Today's Conditions

Outdoor planting for Tropeana Lunga in Zone 10b typically begins around throughout the growing season. Wait until soil reaches at least 45°F before transplanting Tropeana Lunga.

Garden Alerts

Frost-free Zone 10b supports continuous outdoor production.

Sowing Tips

Soil Temperature

Direct sow or transplant when soil at planting depth holds 45°F for reliable germination and early growth.

Expert Note

For sweet, bottle-shaped bulbs, use transplants/sets at the earliest point the soil is workable (avoid cold snaps after planting) and keep plants evenly watered until bulbing starts.