When should I plant Basilikum in Zone 4a?

Start Basilikum seeds indoors around Mar 24. Transplant outdoors after May 19. Expect first harvest around Jun 18.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is May 5. The first fall frost averages Oct 1, giving a 149-day growing season.

Can I grow Basilikum in Zone 4a?

Yes. Basilikum needs 40 days to harvest. Zone 4a has a 149-day growing season, which is sufficient. You can plant up to 5 successions.

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🌿 Growing Basilikum in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Basilikum in this zone. Sidste frost: May 5. Første frost: Oct 1.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 24Oct 1

Season: May 5 – Oct 1 (149 dage) · Succession: plant every 3 weeks (up to 5x)

Zone4a

Sidste frostMay 5

Første frostOct 1

Sæson149 dage

Høst40 dage

SolFuld Sol

When to Plant Basilikum in Zone 4a

Start Seeds Indoors: Mar 24

Start Basilikum seeds indoors around Mar 24 (6 uger før sidste frost). Optimal germination temperature: 80F. Germinates in 5-10 days.

Transplant Outdoors: May 19

Transplant Basilikum seedlings outdoors after May 19. Wait until soil temperature reaches 60F. Space plants at 4/m² (15cm afstand). Harden off plants for a week before moving outside.

Harvest: Jun 18

First harvest approximately Jun 18 (~30 dage from transplant). Continue harvesting until first frost (Oct 1).

Samdyrkning

✅ Peberfrugter✅ Tomater✅ Aubergine

❌ Vinrude

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

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