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Growing Sunflower in Belem

🇧🇷 Zone 13 Planting Guide · Tropical rainforest climate

USDA Zone 13 365 frost-free days 70-100 days to harvest

Quick Answer: Growing Sunflower in Belem

Yes, you can grow Sunflower in Belem, BR! Plant during Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec for best results. Belem is in USDA Zone 13 with a Tropical rainforest climate, offering 365 frost-free days per year. The difficulty level is easy, and Sunflower takes 70-100 days to harvest. Sunflower needs full sun and moderate watering.

Climate Match Analysis

Good Match Belem + Sunflower

Belem's temperatures (23°C to 32°C) are within the tolerable range for Sunflower (8°C to 35°C), though not always in the optimal zone (18°C to 28°C). Plant during recommended months for best results.

Sunflower tolerates 8°C to 35°C
Optimal: 18°C - 28°C
Belem range 23°C to 32°C

Belem Climate Data

USDA Zone
13
Frost-Free
365days
Winter Low
23°C
Summer High
32°C
Rainfall
2834mm/yr
Climate
Af
Tropical rainforest

Sunflower Planting Calendar for Belem

Green months show the best time to plant Sunflower in Belem

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Sunflower Not recommended

Sunflower Growing Requirements

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Sunlight

Full Sun

6+ hours direct sunlight

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Water

Moderate

Keep soil consistently moist

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Days to Harvest

70-100

From planting to first harvest

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Difficulty

easy

Great for beginners

💡 Growing Tips for Sunflower

Sow directly -- taproots don't transplant well. Great for kids to grow. Wait until soil warms to at least 18°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.

Frost tolerance: Sunflower is NOT frost tolerant — wait until after the last frost in Belem.

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Companion Plants for Sunflower

Find out which plants grow best alongside Sunflower — and which to keep apart

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Grow Sunflower Indoors

No garden? Learn how to grow Sunflower indoors with our complete guide

How to Grow Sunflower in Belem

Belem, BR is in USDA Hardiness Zone 13 with a Tropical rainforest climate (Köppen Af). With winter lows of 23°C and summer highs of 32°C, the growing season spans approximately 365 frost-free days. Sunflower is one of the easiest plants to grow in this climate.

Sunflower thrives in temperatures between 18°C and 28°C, requiring full sun and moderate watering. In Belem, the best months to plant Sunflower are January, February, March, April, May, June, July, August, September, October, November, December. Sunflower is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 70-100 days after planting.

Belem receives 2834mm of annual rainfall, which provides good natural moisture for Sunflower. Monitor soil moisture and water as needed.

Other Plants That Grow in Belem

More plants you can grow alongside Sunflower in Belem

Keep Exploring

Frequently Asked Questions

Can I grow sunflower in Belem?

Yes! Sunflower can be successfully grown in Belem, BR. Belem is in USDA Hardiness Zone 13 with a Tropical rainforest climate. The difficulty level for growing Sunflower here is rated "easy". The best months to plant are January, February, March, April, May, June, July, August, September, October, November, December.

When should I plant sunflower in Belem?

In Belem, the recommended planting months for Sunflower are January, February, March, April, May, June, July, August, September, October, November, December. Belem has 365 frost-free days per year, with winter lows of 23°C and summer highs of 32°C. Since Sunflower is not frost tolerant, make sure to plant after the last frost date.

How long does sunflower take to grow in Belem?

Sunflower typically takes 70-100 days from planting to harvest. In Belem's Tropical rainforest climate with 365 frost-free days, you have plenty of time to grow Sunflower to maturity. Sow directly -- taproots don't transplant well. Great for kids to grow. Wait until soil warms to at least 18°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.

Can I grow sunflower indoors in Belem?

Sunflower can potentially be grown indoors in Belem with proper conditions. It requires full sun (6+ hours of direct light — a south-facing window or grow lights recommended). Indoor growing extends your season beyond the Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec outdoor planting window. Use containers with good drainage and moderate watering.

What month do I plant sunflower in Belem?

Plant Sunflower in Belem during January, February, March, April, May, June, July, August, September, October, November, December. These are the optimal months based on Belem's USDA Zone 13 climate, 365 frost-free days, and temperature range of 23°C to 32°C.

Is sunflower hard to grow in Belem?

Sunflower is rated "easy" to grow in Belem. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Sunflower in Belem is Good.

What grows well with sunflower in Belem?

In Belem, you can grow many companion plants alongside Sunflower. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Belem's Zone 13 climate.

Does sunflower need full sun in Belem?

Sunflower requires full sun. In Belem, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.

Last updated: March 2026 · Climate data from NOAA, FAO, USDA

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