When to Plant Jicama in San Jacinto County, TX
Jicama is a tropical legume grown for its crisp, sweet, starchy root. It requires a very long, warm growing season but produces a refreshing, water chestnut-like tuber.
San Jacinto County, Texas is in USDA Zone 8b. The average last spring frost is February 18 and the first fall frost is December 1, giving you a growing season of approximately 286 days.
At an elevation of 6 feet, San Jacinto County receives approximately 71.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 94°F, providing good warmth for Jicama during the growing season. Sandy soil warms quickly in spring — great for early planting — but Jicama will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Jicama root diseases.
San Jacinto County Soil Profile
Soil Type
Sandy Loam
Soil pH
5.3-6.7
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Jicama Planting Timeline — San Jacinto County, TX
Jicama Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | December 31 | Dec 31 – Jan 14 |
| Transplant Outdoors | March 4 | Mar 4 – Mar 18 |
| Direct Sow | February 25 | Feb 25 – Mar 18 |
| Harvest | July 8 | Jul 8 – Sep 16 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | — |
| June | — |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | Start Indoors |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
120–180 days
Soil pH
6 – 7.5
USDA Zone
Zone 8b
Growing Season
286 days
Growing Tips for San Jacinto County
Start seeds indoors 8-10 weeks before last frost. Pinch off flowers to direct energy to root development. Harvest before first frost when roots are 3-6 inches across.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Jicama in Other Locations
Frequently Asked Questions
When should I plant Jicama in San Jacinto County, TX?
San Jacinto County is in Zone 8b with an average last frost of February 18. Plan your Jicama planting based on this frost date — see the calendar above for exact timing.
What planting zone is San Jacinto County, TX?
San Jacinto County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is February 18 and first fall frost is December 1.
Plan Your Garden with Confidence
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