When should I plant Ruohosipuli in Zone 4a?

Start Ruohosipuli seeds indoors around Mar 10. Transplant outdoors after Apr 21. Expect first harvest around Jun 20.

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 Ruohosipuli in Zone 4a?

Yes. Ruohosipuli needs 60 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

🌱

🌱 Growing Ruohosipuli in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Ruohosipuli in this zone. Viimeinen halla: May 5. Ensimmäinen halla: Oct 1.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 10Oct 1

Season: May 5 – Oct 1 (149 päivää)

Vyöhyke4a

Viimeinen hallaMay 5

Ensimmäinen hallaOct 1

Kausi149 päivää

Sato60 päivää

AurinkoTäysi Aurinko

When to Plant Ruohosipuli in Zone 4a

Start Seeds Indoors: Mar 10

Start Ruohosipuli seeds indoors around Mar 10 (8 viikkoa ennen viimeistä hallaa). Optimal germination temperature: 65F. Germinates in 7-14 days.

Transplant Outdoors: Apr 21

Transplant Ruohosipuli seedlings outdoors after Apr 21. Wait until soil temperature reaches 45F. Space plants at 16/m² (8cm välein). Harden off plants for a week before moving outside.

Harvest: Jun 20

First harvest approximately Jun 20 (~60 päivää from transplant). Continue harvesting until first frost (Oct 1). Ruohosipuli can overwinter in mild climates for continued harvest.

Kumppaniviljely

✅ Porkkanat✅ Tomaatit✅ Grapes✅ Ruusut

❌ Pavut❌ Herneet

Ruohosipuli 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

Plan Your Garden Ruohosipuli

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

Start Free Ruohosipuli Growing Guide