2026 Planting Guide
Spring cropWhen to Plant Onions in Brazil
Complete guide to growing onions in Brazil with optimal planting dates, recommended varieties, soil requirements, pest management, and harvest timing. Data sourced from national agricultural research organizations and FAO.
Monthly Planting Calendar
Visual overview of the onions growing season in Brazil.
Quick Facts
Min. Soil Temp
12°C (54°F) minimum
Growing Period
120-170 days
From planting to harvest
Last Spring Frost
N/A
Tropical climate
First Fall Frost
N/A
No frost risk
Monthly Task Timeline
Month-by-month guide for managing onions in Brazil.
January - February
Off-seasonCover crop planting, soil testing, equipment maintenance, and planning for next season.
March - May
PlantPrepare soil, apply starter fertilizer, and sow seeds at recommended depth and spacing.
June - July
Grow & MonitorIrrigate as needed, scout for pests, apply side-dress fertilizer, and manage weeds.
August - December
HarvestCheck maturity indicators, schedule equipment, harvest at optimal moisture content.
Best Onions Varieties for Brazil
These varieties have proven performance in Brazil's climate and soil conditions. Always source certified seed from reputable dealers.
| # | Variety | Best For |
|---|---|---|
| 1 | Baia Periforme | Brazil climate |
| 2 | Crioula | Brazil climate |
| 3 | Granex 33 | Brazil climate |
| 4 | Alfa Tropical | Brazil climate |
Growing Tips for Brazil
Region-specific advice from agricultural extension services and experienced Brazil farmers.
Santa Catarina and Rio Grande do Sul are top producers
Winter crop in subtropical south
Bulb onions for domestic market; sweet onions for export
Pest & Disease Watch
Monitor for these threats throughout the growing season. Integrated Pest Management (IPM) is recommended.
Thrips
Scout regularly and use integrated pest management
Onion maggot
Scout regularly and use integrated pest management
Purple blotch
Scout regularly and use integrated pest management
Downy mildew
Scout regularly and use integrated pest management
Stemphylium blight
Scout regularly and use integrated pest management
Companion Planting
These plants grow well alongside onions, improving pest control, pollination, and nutrient availability.
Frost Dates
No Frost Risk
Brazil has a tropical or subtropical climate. Frost is generally not a concern, but altitude-dependent cold spells can occur in some areas.
Frequently Asked Questions
When is the best time to plant onions in Brazil?
The optimal planting window for onions in Brazil is March 1 to May 31. Soil temperature should reach at least 12°C (54°F) minimum before planting. The total growing period is 120-170 days.
What varieties of onions grow best in Brazil?
The best varieties for Brazil include Baia Periforme, Crioula, Granex 33, Alfa Tropical. These varieties are adapted to local climate and soil conditions and have proven performance records.
When can I harvest onions in Brazil?
The harvest window for onions in Brazil is typically August 1 to December 31. The crop takes 120-170 days from planting to reach maturity.
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Data Sources
Data sourced from EMBRAPA (Empresa Brasileira de Pesquisa Agropecuaria), CONAB, and state extension services. Last updated: March 2026.
Planting dates are averages and may vary by county, elevation, and local microclimate. Always consult your local extension office for the most precise recommendations.