Growing Nasturtium in Okinawa
🇯🇵 Zone 11 Planting Guide · Humid subtropical climate
Quick Answer: Growing Nasturtium in Okinawa
Yes, you can grow Nasturtium in Okinawa, JP! Plant during Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec for best results. Okinawa is in USDA Zone 11 with a Humid subtropical climate, offering 365 frost-free days per year. The difficulty level is easy, and Nasturtium takes 35-52 days to harvest. Nasturtium needs full sun to partial shade and low watering.
Climate Match Analysis
Okinawa's climate requires careful timing. Summer highs (31°C) exceed Nasturtium's maximum (30°C), so plant early or provide shade. Follow the recommended planting months for success.
Okinawa Climate Data
Nasturtium Planting Calendar for Okinawa
Green months show the best time to plant Nasturtium in Okinawa
Nasturtium Growing Requirements
Sunlight
Full Sun to Partial Shade
2-4 hours direct sunlight
Water
Low
Drought tolerant, water sparingly
Days to Harvest
35-52
From planting to first harvest
Difficulty
Great for beginners
💡 Growing Tips for Nasturtium
Poor soil produces more flowers. Seeds are large and easy for kids. Wait until soil warms to at least 15°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Overwatering is the most common mistake. Let soil dry out between waterings and ensure drainage is excellent.
Frost tolerance: Nasturtium is NOT frost tolerant — wait until after the last frost in Okinawa.
How to Grow Nasturtium in Okinawa
Okinawa, JP is in USDA Hardiness Zone 11 with a Humid subtropical climate (Köppen Cfa). With winter lows of 14°C and summer highs of 31°C, the growing season spans approximately 365 frost-free days. Nasturtium is one of the easiest plants to grow in this climate.
Nasturtium thrives in temperatures between 15°C and 25°C, requiring full sun to partial shade and low watering. In Okinawa, the best months to plant Nasturtium are January, February, March, April, May, June, July, August, September, October, November, December. Nasturtium is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 35-52 days after planting.
Okinawa receives 2040mm of annual rainfall, which provides good natural moisture for Nasturtium. Be careful not to overwater — the natural rainfall may be sufficient.
Other Plants That Grow in Okinawa
More plants you can grow alongside Nasturtium in Okinawa
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Frequently Asked Questions
Can I grow nasturtium in Okinawa?
Yes! Nasturtium can be successfully grown in Okinawa, JP. Okinawa is in USDA Hardiness Zone 11 with a Humid subtropical climate. The difficulty level for growing Nasturtium 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 nasturtium in Okinawa?
In Okinawa, the recommended planting months for Nasturtium are January, February, March, April, May, June, July, August, September, October, November, December. Okinawa has 365 frost-free days per year, with winter lows of 14°C and summer highs of 31°C. Since Nasturtium is not frost tolerant, make sure to plant after the last frost date.
How long does nasturtium take to grow in Okinawa?
Nasturtium typically takes 35-52 days from planting to harvest. In Okinawa's Humid subtropical climate with 365 frost-free days, you have plenty of time to grow Nasturtium to maturity. Poor soil produces more flowers. Seeds are large and easy for kids. Wait until soil warms to at least 15°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Overwatering is the most common mistake. Let soil dry out between waterings and ensure drainage is excellent.
Can I grow nasturtium indoors in Okinawa?
Nasturtium can potentially be grown indoors in Okinawa with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). 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 low watering.
What month do I plant nasturtium in Okinawa?
Plant Nasturtium in Okinawa during January, February, March, April, May, June, July, August, September, October, November, December. These are the optimal months based on Okinawa's USDA Zone 11 climate, 365 frost-free days, and temperature range of 14°C to 31°C.
Is nasturtium hard to grow in Okinawa?
Nasturtium is rated "easy" to grow in Okinawa. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Nasturtium in Okinawa is Moderate.
What grows well with nasturtium in Okinawa?
In Okinawa, you can grow many companion plants alongside Nasturtium. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Okinawa's Zone 11 climate.
Does nasturtium need full sun in Okinawa?
Nasturtium requires full sun to partial shade. Nasturtium tolerates lower light. In Okinawa, a spot with filtered or indirect light for 2-4 hours works well.