When should I plant Kembang Kol in Zone 1a?

Start Kembang Kol seeds indoors around Apr 13. Transplant outdoors after May 11. Expect first harvest around Jul 10.

What is the last frost date for Zone 1a?

The average last spring frost date for Zone 1a is May 25. The first fall frost averages Aug 28, giving a 95-day growing season.

Can I grow Kembang Kol in Zone 1a?

Yes. Kembang Kol needs 75 days to harvest. Zone 1a has a 95-day growing season, which is sufficient.

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🥦 Growing Kembang Kol in Zone 1a

Zone 1a has harsh winters and a short growing season. Start Kembang Kol early indoors to maximize your harvest window. Embun beku terakhir: May 25. Embun beku pertama: Aug 28.

Planting Calendar

Indoor

Outdoor

Harvest

Apr 13Aug 28

Season: May 25 – Aug 28 (95 hari)

Zona1a

Embun beku terakhirMay 25

Embun beku pertamaAug 28

Musim95 hari

Panen75 hari

MatahariMatahari Penuh

When to Plant Kembang Kol in Zone 1a

Start Seeds Indoors: Apr 13

Start Kembang Kol seeds indoors around Apr 13 (6 minggu sebelum embun beku terakhir). Optimal germination temperature: 70F. Germinates in 5-10 days.

Transplant Outdoors: May 11

Transplant Kembang Kol seedlings outdoors after May 11. Wait until soil temperature reaches 50F. Space plants at 1/m² (30cm jarak). Harden off plants for a week before moving outside.

Harvest: Jul 10

First harvest approximately Jul 10 (~60 hari from transplant). Continue harvesting until first frost (Aug 28).

Fall Planting: Jun 5

For a fall harvest, plant Kembang Kol around Jun 5 (12 weeks before first frost).

Tanaman Pendamping

✅ Bayam ✅ Seledri ✅ Thyme✅ Kacang

❌ Tomat❌ Stroberi❌ Kacang Polong

Kembang Kol in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

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Track Kembang Kol from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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