Growing Calendula in Surabaya
🇮🇩 Zone 13 Planting Guide · Tropical savanna climate
Quick Answer: Growing Calendula in Surabaya
Yes, you can grow Calendula in Surabaya, ID! Plant during Nov, Dec, Jan, Feb for best results. Surabaya is in USDA Zone 13 with a Tropical savanna climate, offering 365 frost-free days per year. The difficulty level is easy, and Calendula takes 45-65 days to harvest. Calendula needs full sun and moderate watering.
Climate Match Analysis
Surabaya's climate requires careful timing. Summer highs (34°C) exceed Calendula's maximum (28°C), so plant early or provide shade. Follow the recommended planting months for success.
Surabaya Climate Data
Calendula Planting Calendar for Surabaya
Green months show the best time to plant Calendula in Surabaya
Calendula Growing Requirements
Sunlight
Full Sun
6+ hours direct sunlight
Water
Moderate
Keep soil consistently moist
Days to Harvest
45-65
From planting to first harvest
Difficulty
Great for beginners
💡 Growing Tips for Calendula
Deadhead for continuous blooms. Self-seeds readily. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.
Frost tolerance: Calendula is frost tolerant — you can plant earlier in spring.
How to Grow Calendula in Surabaya
Surabaya, ID is in USDA Hardiness Zone 13 with a Tropical savanna climate (Köppen Aw). With winter lows of 24°C and summer highs of 34°C, the growing season spans approximately 365 frost-free days. Calendula is one of the easiest plants to grow in this climate.
Calendula thrives in temperatures between 10°C and 22°C, requiring full sun and moderate watering. In Surabaya, the best months to plant Calendula are November, December, January, February. Since Calendula can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 45-65 days after planting.
Surabaya receives 1500mm of annual rainfall, which provides good natural moisture for Calendula. Monitor soil moisture and water as needed.
Other Plants That Grow in Surabaya
More plants you can grow alongside Calendula in Surabaya
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Frequently Asked Questions
Can I grow calendula in Surabaya?
Yes! Calendula can be successfully grown in Surabaya, ID. Surabaya is in USDA Hardiness Zone 13 with a Tropical savanna climate. The difficulty level for growing Calendula here is rated "easy". The best months to plant are November, December, January, February.
When should I plant calendula in Surabaya?
In Surabaya, the recommended planting months for Calendula are November, December, January, February. Surabaya has 365 frost-free days per year, with winter lows of 24°C and summer highs of 34°C. Calendula is frost tolerant, giving you more flexibility with planting dates.
How long does calendula take to grow in Surabaya?
Calendula typically takes 45-65 days from planting to harvest. In Surabaya's Tropical savanna climate with 365 frost-free days, you have plenty of time to grow Calendula to maturity. Deadhead for continuous blooms. Self-seeds readily. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.
Can I grow calendula indoors in Surabaya?
Calendula can potentially be grown indoors in Surabaya 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 Nov, Dec, Jan, Feb outdoor planting window. Use containers with good drainage and moderate watering.
What month do I plant calendula in Surabaya?
Plant Calendula in Surabaya during November, December, January, February. These are the optimal months based on Surabaya's USDA Zone 13 climate, 365 frost-free days, and temperature range of 24°C to 34°C.
Is calendula hard to grow in Surabaya?
Calendula is rated "easy" to grow in Surabaya. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Calendula in Surabaya is Moderate.
What grows well with calendula in Surabaya?
In Surabaya, you can grow many companion plants alongside Calendula. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Surabaya's Zone 13 climate.
Does calendula need full sun in Surabaya?
Calendula requires full sun. In Surabaya, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.