Growing Water Spinach in Zone 10b
Zone 10b has a year-round growing season. Water Spinach can be planted almost any time with proper planning. Last frost: Jan 28. First frost: Dec 22.
Planting Calendar
Season: Jan 28 – Dec 22 (328 days) · Succession: plant every 2 weeks (up to 21x)
When to Plant Water Spinach in Zone 10b
Start Seeds Indoors: Dec 17
Start Water Spinach seeds indoors around Dec 17 (6 weeks before last frost). Optimal germination temperature: 60°F. Germinates in 6–14 days.
Transplant Outdoors: Dec 31
Transplant Water Spinach seedlings outdoors after Dec 31. Wait until soil temperature reaches 35°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.
Harvest: Jan 30
First harvest approximately Jan 30 (~30 days from planting). Continue harvesting until first frost (Dec 22). Water Spinach can overwinter in mild climates for continued harvest.
Fall Planting: Nov 10
For a fall harvest, plant Water Spinach around Nov 10 (6 weeks before first frost).
Water Spinach 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 13bFrequently Asked Questions
When should I plant Water Spinach in Zone 10b?
Start Water Spinach seeds indoors around Dec 17. Transplant outdoors after Dec 31. Expect first harvest around Jan 30.
What is the last frost date for Zone 10b?
The average last spring frost date for Zone 10b is Jan 28. The first fall frost averages Dec 22, giving a 328-day growing season.
Can I grow Water Spinach in Zone 10b?
Yes. Water Spinach needs 30 days to harvest. Zone 10b has a 328-day growing season, which is sufficient. You can plant up to 21 successions.
What is the best month to plant Water Spinach in Zone 10b?
The best time to start Water Spinach in Zone 10b is Dec. Begin seeds indoors around Dec 17, then transplant outdoors after the last frost date of Jan 28.
How long does Water Spinach take to harvest?
Water Spinach takes approximately 30 days from planting to harvest. In Zone 10b, expect your first harvest around Jan 30.
Plan Your Water Spinach Garden
Track Water Spinach from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Water Spinach Growing Guide