When should I plant Sla in Zone 4a?

Start Sla seeds indoors around Mar 24. Transplant outdoors after Apr 14. Expect first harvest around May 19.

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 Sla in Zone 4a?

Yes. Sla needs 45 days to harvest. Zone 4a has a 149-day growing season, which is sufficient. You can plant up to 7 successions.

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🥬 Kweken van Sla in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Sla in this zone. Laatste vorst: May 5. Eerste vorst: Oct 1.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 24Oct 1

Season: May 5 – Oct 1 (149 dagen) · Succession: plant every 2 weeks (up to 7x)

Zone4a

Laatste vorstMay 5

Eerste vorstOct 1

Seizoen149 dagen

Oogst45 dagen

ZonHalfschaduw

When to Plant Sla in Zone 4a

Start Seeds Indoors: Mar 24

Start Sla seeds indoors around Mar 24 (6 weken voor de laatste vorst). Optimal germination temperature: 65F. Germinates in 4-10 days.

Transplant Outdoors: Apr 14

Transplant Sla seedlings outdoors after Apr 14. Wait until soil temperature reaches 40F. Space plants at 4/m² (15cm afstand). Harden off plants for a week before moving outside.

Harvest: May 19

First harvest approximately May 19 (~35 dagen from transplant). Continue harvesting until first frost (Oct 1).

Fall Planting: Aug 6

For a fall harvest, plant Sla around Aug 6 (8 weeks before first frost).

Begeleidende Beplanting

✅ Aardbeien✅ Wortels✅ Rode Bieten✅ Komkommers✅ Radijzen

Sla in Andere 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

Plan Je Tuin voor Sla

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

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