When to Plant Sunchoke in San Augustine County, TX
Sunchokes (Jerusalem artichokes) are a native sunflower relative grown for their knobby, nutty-flavored tubers. They are extremely productive and nearly impossible to eradicate.
San Augustine County, Texas is in USDA Zone 8b. The average last spring frost is March 5 and the first fall frost is November 16, giving you a growing season of approximately 256 days.
At an elevation of 146 feet, San Augustine County receives approximately 62.7 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°F, so Sunchoke may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Sunchoke will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sunchoke root diseases.
San Augustine County Soil Profile
Soil Type
Sandy Loam
Soil pH
5.4-6.6
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.
Soil Compatibility in San Augustine County
How your county's soil matches Sunchoke's growing requirements.
Soil pH
Your soil pH (5.4–6.6) overlaps with Sunchoke's range (6.0–7.5), though not a perfect match.
Soil Texture
Sandy soil in San Augustine County warms quickly in spring but drains fast. Sunchoke will need more frequent watering and regular compost additions to retain nutrients.
Organic Matter
Organic matter is low (1.8%). Add 2-3 inches of compost before planting Sunchoke.
How to Plant Sunchoke
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Sunchoke Planting Timeline — San Augustine County, TX
Sunchoke Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | March 19 | Mar 19 – Apr 2 |
| Harvest | July 9 | Jul 9 – Sep 3 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Transplant Outdoors |
| April | Transplant Outdoors |
| May | — |
| June | — |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Natural rainfall sufficient
📅 Days to Maturity
110–150 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 8b
📆 Growing Season
256 days in San Augustine County
Growing Tips for Sunchoke in San Augustine County
Direct sow Sunchoke outdoors after March 05 in San Augustine County when soil has warmed and frost danger has passed.
Sandy soil in San Augustine County dries quickly — mulch Sunchoke with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
With summer highs reaching 96°F in San Augustine County, provide afternoon shade for Sunchoke and water deeply in the morning.
Common pests for Sunchoke in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
Plant tubers 4 inches deep in early spring. Contain plants with barriers as they spread aggressively. Harvest after frost or leave in ground and dig as needed through winter.
Companion Planting
Good Companions
Level Up Your Garden
Sunchoke in Other Locations
Frequently Asked Questions
When should I plant Sunchoke in San Augustine County, TX?
San Augustine County is in Zone 8b with an average last frost of March 5. Plan your Sunchoke planting based on this frost date — see the calendar above for exact timing.
What planting zone is San Augustine County, TX?
San Augustine County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 5 and first fall frost is November 16.
Plan Your Garden with Confidence
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