When should I plant Nasturtium in Zone 11b?

Start Nasturtium seeds indoors around Dec 18. Transplant outdoors after Jan 22. Expect first harvest around Mar 3.

What is the last frost date for Zone 11b?

The average last spring frost date for Zone 11b is Jan 15. The first fall frost averages Dec 31, giving a 350-day growing season.

Can I grow Nasturtium in Zone 11b?

Yes. Nasturtium needs 45 days to harvest. Zone 11b has a 350-day growing season, which is sufficient.

🌺

🌺 Growing Nasturtium in Zone 11b

Zone 11b has a year-round growing season. Nasturtium can be planted almost any time with proper planning. Last frost: Jan 15. First frost: Dec 31.

Planting Calendar

Indoor

Outdoor

Harvest

Dec 18Dec 31

Season: Jan 15 – Dec 31 (350 days)

Zone11b

Last FrostJan 15

First FrostDec 31

Season Length350 days

Days to Harvest45

SunFull Sun

Frost ToleranceNone

Spacing4/sqft (6" apart)

When to Plant Nasturtium in Zone 11b

Start Seeds Indoors: Dec 18

Start Nasturtium seeds indoors around Dec 18 (4 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 7–14 days.

Transplant Outdoors: Jan 22

Transplant Nasturtium seedlings outdoors after Jan 22. Wait until soil temperature reaches 55°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Mar 3

First harvest approximately Mar 3 (~40 days from transplant). Continue harvesting until first frost (Dec 31).

Companion Planting

✅ Cucumbers✅ Squash✅ Pumpkins✅ Radishes✅ Cabbage

Nasturtium 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 Nasturtium Garden

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

Start Free Nasturtium Growing Guide