When to Plant Yam in Brantley County, GA
This month in Brantley County, Georgia
Welcome to May in Zone 9a. These are the moves that will have the biggest impact on your growing season.
True yams are tropical tubers distinct from sweet potatoes, producing large starchy roots that can weigh several pounds. They are a staple food in tropical regions worldwide.
Brantley County, Georgia is in USDA Zone 9a. The average last spring frost is February 19 and the first fall frost is November 29, giving you a growing season of approximately 283 days.
At an elevation of 238 feet, Brantley County receives approximately 58.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 90°F, providing good warmth for Yam during the growing season. Sandy soil warms quickly in spring — great for early planting — but Yam will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Yam root diseases.
Brantley County Soil Profile
Soil Type
Sandy Loam
Soil pH
4.8-6.1
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 Brantley County
How your county's soil matches Yam's growing requirements.
Soil pH
Your soil pH (4.8–6.1) is more acidic than Yam prefers (5.5–6.5). Add garden lime to raise pH.
Soil Texture
Sandy soil in Brantley County warms quickly in spring but drains fast. Yam will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Yam.
Organic Matter
Organic matter is moderate (2.0%). Annual compost additions will help Yam.
How to Plant Yam
Plant Water Budget
Monthly Watering Guide for Yam
Yam needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Yam Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.3" | 0" | ❄️ Dormant |
| Feb | 4.3" | 5.1" | 0" | ✅ Rainfall sufficient |
| Mar | 4.3" | 6.2" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 4.2" | 0.1" | 💧 Light watering |
| May | 4.3" | 5.1" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 5.7" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 5.4" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 5.9" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Nov | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Dec | — | 4.4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Feb–Nov in Brantley County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Yam Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Yam Planting Timeline — Brantley County, GA
Yam Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 8 | Jan 8 – Jan 22 |
| Transplant Outdoors | February 26 | Feb 26 – Mar 12 |
| Direct Sow | February 19 | Feb 19 – Mar 12 |
| Harvest | August 27 | Aug 27 – Dec 24 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Transplant Outdoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | — |
| June | — |
| July | — |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | Harvest |
| December | Harvest |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Natural rainfall sufficient
📅 Days to Maturity
180–330 days
🧪 Soil pH
Needs 5.5–6.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9a
📆 Growing Season
283 days in Brantley County
Growing Tips for Yam in Brantley County
Direct sow Yam outdoors after February 19 in Brantley County when soil has warmed and frost danger has passed.
Sandy soil in Brantley County dries quickly — mulch Yam with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Your 284.0-day growing season in Brantley County is tight for Yam (180.0-330.0 days to maturity). Start indoors and choose early-maturing varieties.
General growing tips
Plant tuber pieces in mounds of loose, rich soil. Provide sturdy trellising for climbing vines. Yams require a long, warm growing season of 8-11 months. Harvest when vines die back.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Yam in Other Locations
Frequently Asked Questions
When should I plant Yam in Brantley County, GA?
Brantley County is in Zone 9a with an average last frost of February 19. Plan your Yam planting based on this frost date — see the calendar above for exact timing.
What planting zone is Brantley County, GA?
Brantley County, Georgia is in USDA Hardiness Zone 9a. The average last spring frost is February 19 and first fall frost is November 29.
Your Brantley County Garden Planner — Free
A 24-page printable planner built for Brantley County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.