When to Plant Cilantro in Navarro County, TX
Navarro County, Texas gardeners: here's your May plan
Your garden in Navarro County, Texas is working on a schedule, even when you're not. Here's where you should be this May.
-
Bring in the cilantro
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
A few tasks this May that'll pay off in June
- First harvests: cilantro
Cilantro is a dual-purpose herb providing fresh leaves (cilantro) and dried seeds (coriander). It bolts quickly in heat, producing flowers beloved by beneficial insects.
Navarro County, Texas is in USDA Zone 8b. The average last spring frost is March 11 and the first fall frost is November 14, giving you a growing season of approximately 248 days.
At an elevation of 221 feet, Navarro County receives approximately 70.4 inches of rainfall annually with predominantly clay soil. Summer highs average 93°F, providing good warmth for Cilantro during the growing season. Clay soil retains moisture well for Cilantro, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cilantro root diseases.
Navarro County Soil Profile
Soil Type
Clay
Soil pH
7-7.7
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.
Soil Compatibility in Navarro County
How your county's soil matches Cilantro's growing requirements.
Soil pH
Your soil pH (7.0–7.7) is more alkaline than Cilantro prefers (6.0–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
Heavy clay soil (45% clay) in Navarro County compacts easily and drains slowly. Amend with compost and avoid working soil when wet.
Organic Matter
Organic matter is moderate (3.0%). Annual compost additions will help Cilantro.
How to Plant Cilantro
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Cilantro
Sow every 4.6 weeks. Last sowing by Sep 15 to harvest before frost.
For a dedicated fall crop, sow by Sep 05.
Plant Water Budget
Monthly Watering Guide for Cilantro
Cilantro needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.
| Month | Cilantro Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.8" | 0" | ❄️ Dormant |
| Feb | — | 2.6" | 0" | ❄️ Dormant |
| Mar | 2.2" | 4.5" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 8" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 10.5" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 12.1" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 8.3" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 7.6" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 5.9" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 5" | 0" | ✅ Rainfall sufficient |
| Nov | 2.2" | 2.5" | 0" | ✅ Rainfall sufficient |
| Dec | — | 1.7" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Navarro County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Cilantro 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.
Cilantro Planting Timeline — Navarro County, TX
Cilantro Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 4 | Feb 4 – Feb 18 |
| Transplant Outdoors | March 4 | Mar 4 – Mar 18 |
| Direct Sow | February 25 | Feb 25 – Mar 18 |
| Harvest | April 15 | Apr 15 – Jun 17 |
| Fall Sowing | September 5 | Sep 5 – Sep 19 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
0.5"/week · Natural rainfall sufficient
📅 Days to Maturity
40–60 days
🧪 Soil pH
Needs 6–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 8b
📆 Growing Season
248 days in Navarro County
Growing Tips for Cilantro in Navarro County
Direct sow Cilantro outdoors after March 11 in Navarro County when soil has warmed and frost danger has passed.
With Navarro County's clay soil (45% clay), work in 3-4 inches of compost before planting Cilantro. Avoid tilling when soil is wet to prevent compaction.
Summer highs in Navarro County reach 93°F — grow Cilantro as a spring or fall crop. Use shade cloth if planting in summer.
Your generous 248.0-day season in Navarro County allows multiple plantings of Cilantro. Sow every 20.0 days for continuous harvest.
Common pests for Cilantro in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.
General growing tips
Succession sow every 2-3 weeks. Provide afternoon shade in warm weather. Harvest leaves before flowering or allow some plants to go to seed for coriander and self-sowing.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Cilantro in Other Locations
Frequently Asked Questions
When should I plant Cilantro in Navarro County, TX?
Navarro County is in Zone 8b with an average last frost of March 11. Plan your Cilantro planting based on this frost date — see the calendar above for exact timing.
What planting zone is Navarro County, TX?
Navarro County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 11 and first fall frost is November 14.
Your Navarro County Garden Planner — Free
A 24-page printable planner built for Navarro 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.