When to Plant Marigolds in Edwards County, TX
Marigolds (Tagetes patula) are warm-season annuals beloved for their cheerful orange, yellow, and red blooms — and for their well-documented ability to repel pest nematodes in vegetable beds. Easy from seed, drought-tolerant once established, and bloom from early summer until the first hard frost.
Edwards County, Texas is in USDA Zone 8b. The average last spring frost is April 2 and the first fall frost is November 8, giving you a growing season of approximately 220 days.
At an elevation of 4,265 feet, Edwards County receives approximately 61.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 102°F, so Marigolds may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Marigolds will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Marigolds root diseases.
Edwards County Soil Profile
Soil Type
Sandy Loam
Soil pH
7.8-8.1
Drainage
Well Drained
Monthly Watering Guide for Marigolds
Marigolds needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Marigolds Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.5" | 0" | ❄️ Dormant |
| Feb | — | 3.3" | 0" | ❄️ Dormant |
| Mar | — | 3.3" | 0" | ❄️ Dormant |
| Apr | 4.3" | 2" | 2.3" | 🚿 Regular watering |
| May | 4.3" | 1.3" | 3" | 🚿 Regular watering |
| Jun | 4.3" | 1.8" | 2.5" | 🚿 Regular watering |
| Jul | 4.3" | 11.5" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 13.8" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 7" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Nov | 4.3" | 3.6" | 0.7" | 💧 Light watering |
| Dec | — | 4.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Nov in Edwards County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Marigolds Planting Timeline — Edwards County, TX
Marigolds Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 26 | Feb 26 – Mar 12 |
| Transplant Outdoors | March 19 | Mar 19 – Apr 2 |
| Direct Sow | March 19 | Mar 19 – Apr 9 |
| Bloom | May 14 | May 14 – Oct 1 |
Plant 0.3" deep · 10" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | Bloom |
| June | Bloom |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
50–70 days
🧪 Soil pH
Needs 6–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 8b
📆 Growing Season
220 days in Edwards County
Growing Tips for Edwards County
Direct-sow after last frost or start indoors 4-6 weeks earlier. Deadhead spent blooms to keep new flowers coming. French marigolds (T. patula) are the most reliable nematode repellents — plant a band around vegetable beds. Tolerate poor soil but bloom best with monthly compost.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Very easy to save. Seeds are the long, thin, dark pieces inside the dried flower head.
Marigolds in Other Locations
Frequently Asked Questions
When should I plant Marigolds in Edwards County, TX?
Edwards County is in Zone 8b with an average last frost of April 2. Plan your Marigolds planting based on this frost date — see the calendar above for exact timing.
What planting zone is Edwards County, TX?
Edwards County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is April 2 and first fall frost is November 8.
Your Edwards County Garden Planner — Free
A 22-page printable planner built for Edwards County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.