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Growing Sunflower in Nairobi

🇰🇪 Zone 10 Planting Guide · Subtropical highland climate

USDA Zone 10 365 frost-free days 70-100 days to harvest

Quick Answer: Growing Sunflower in Nairobi

Yes, you can grow Sunflower in Nairobi, KE! Plant during Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec for best results. Nairobi is in USDA Zone 10 with a Subtropical highland 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 Nairobi + Sunflower

Nairobi's temperatures (11°C to 26°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
Nairobi range 11°C to 26°C

Nairobi Climate Data

USDA Zone
10
Frost-Free
365days
Winter Low
11°C
Summer High
26°C
Rainfall
869mm/yr
Climate
Cwb
Subtropical highland

Sunflower Planting Calendar for Nairobi

Green months show the best time to plant Sunflower in Nairobi

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 Nairobi.

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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 Nairobi

Nairobi, KE is in USDA Hardiness Zone 10 with a Subtropical highland climate (Köppen Cwb). With winter lows of 11°C and summer highs of 26°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 Nairobi, 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.

With 869mm of annual rainfall, Nairobi provides moderate natural moisture. This should be adequate for Sunflower's water needs.

Other Plants That Grow in Nairobi

More plants you can grow alongside Sunflower in Nairobi

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Frequently Asked Questions

Can I grow sunflower in Nairobi?

Yes! Sunflower can be successfully grown in Nairobi, KE. Nairobi is in USDA Hardiness Zone 10 with a Subtropical highland 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 Nairobi?

In Nairobi, the recommended planting months for Sunflower are January, February, March, April, May, June, July, August, September, October, November, December. Nairobi has 365 frost-free days per year, with winter lows of 11°C and summer highs of 26°C. Since Sunflower is not frost tolerant, make sure to plant after the last frost date.

How long does sunflower take to grow in Nairobi?

Sunflower typically takes 70-100 days from planting to harvest. In Nairobi's Subtropical highland 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 Nairobi?

Sunflower can potentially be grown indoors in Nairobi 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 Nairobi?

Plant Sunflower in Nairobi during January, February, March, April, May, June, July, August, September, October, November, December. These are the optimal months based on Nairobi's USDA Zone 10 climate, 365 frost-free days, and temperature range of 11°C to 26°C.

Is sunflower hard to grow in Nairobi?

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

What grows well with sunflower in Nairobi?

In Nairobi, 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 Nairobi's Zone 10 climate.

Does sunflower need full sun in Nairobi?

Sunflower requires full sun. In Nairobi, 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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