When should I plant Kembang Kol in Zone 5a?

Start Kembang Kol seeds indoors around Mar 17. Transplant outdoors after Apr 14. Expect first harvest around Jun 13.

What is the last frost date for Zone 5a?

The average last spring frost date for Zone 5a is Apr 28. The first fall frost averages Oct 8, giving a 163-day growing season.

Can I grow Kembang Kol in Zone 5a?

Yes. Kembang Kol needs 75 days to harvest. Zone 5a has a 163-day growing season, which is sufficient.

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🥦 Growing Kembang Kol in Zone 5a

Zone 5a has cold winters and a moderate growing season. Timing is key for Kembang Kol in this zone. Embun beku terakhir: Apr 28. Embun beku pertama: Oct 8.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 17Oct 8

Season: Apr 28 – Oct 8 (163 hari)

Zona5a

Embun beku terakhirApr 28

Embun beku pertamaOct 8

Musim163 hari

Panen75 hari

MatahariMatahari Penuh

When to Plant Kembang Kol in Zone 5a

Start Seeds Indoors: Mar 17

Start Kembang Kol seeds indoors around Mar 17 (6 minggu sebelum embun beku terakhir). Optimal germination temperature: 70F. Germinates in 5-10 days.

Transplant Outdoors: Apr 14

Transplant Kembang Kol seedlings outdoors after Apr 14. Wait until soil temperature reaches 50F. Space plants at 1/m² (30cm jarak). Harden off plants for a week before moving outside.

Harvest: Jun 13

First harvest approximately Jun 13 (~60 hari from transplant). Continue harvesting until first frost (Oct 8).

Fall Planting: Jul 16

For a fall harvest, plant Kembang Kol around Jul 16 (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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