When should I plant Sipuli in Zone 9a?

Start Sipuli seeds indoors around Jan 9. Transplant outdoors after Feb 20. Expect first harvest around May 11.

What is the last frost date for Zone 9a?

The average last spring frost date for Zone 9a is Mar 20. The first fall frost averages Nov 12, giving a 237-day growing season.

Can I grow Sipuli in Zone 9a?

Yes. Sipuli needs 110 days to harvest. Zone 9a has a 237-day growing season, which is sufficient.

🧅

🧅 Growing Sipuli in Zone 9a

Zone 9a has warm winters and an extended growing season -- excellent for heat-loving crops like Sipuli. Viimeinen halla: Mar 20. Ensimmäinen halla: Nov 12.

Planting Calendar

Indoor

Outdoor

Harvest

Jan 9Nov 12

Season: Mar 20 – Nov 12 (237 päivää)

Vyöhyke9a

Viimeinen hallaMar 20

Ensimmäinen hallaNov 12

Kausi237 päivää

Sato110 päivää

AurinkoTäysi Aurinko

When to Plant Sipuli in Zone 9a

Start Seeds Indoors: Jan 9

Start Sipuli seeds indoors around Jan 9 (10 viikkoa ennen viimeistä hallaa). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: Feb 20

Transplant Sipuli seedlings outdoors after Feb 20. Wait until soil temperature reaches 45F. Space plants at 9/m² (10cm välein). Harden off plants for a week before moving outside.

Harvest: May 11

First harvest approximately May 11 (~80 päivää from transplant). Continue harvesting until first frost (Nov 12).

Kumppaniviljely

✅ Mansikat✅ Kaali✅ Punajuuret✅ Salaatti✅ Porkkanat✅ Tomaatit

❌ Pavut❌ Herneet

Sipuli 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 Sipuli

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

Start Free Sipuli Growing Guide