When to Plant Watercress in Morris County, TX
May to-do list for Morris County, Texas
Each item below is timed to Morris County, Texas's frost dates and soil temperatures. Skip nothing, stress about nothing.
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Bring in the watercress
Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.
Watercress is a semi-aquatic plant with a peppery, tangy flavor rich in vitamins and minerals. It grows naturally along streams and can be cultivated in containers with standing water.
Morris County, Texas is in USDA Zone 8b. The average last spring frost is March 12 and the first fall frost is November 11, giving you a growing season of approximately 244 days.
At an elevation of 185 feet, Morris County receives approximately 69.9 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°F, so Watercress may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Watercress will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Watercress root diseases.
Morris County Soil Profile
Soil Type
Sandy Loam
Soil pH
5.5-6.6
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 Morris County
How your county's soil matches Watercress's growing requirements.
Soil pH
Your soil pH (5.5–6.6) is more acidic than Watercress prefers (6.5–7.5). Add garden lime to raise pH.
Soil Texture
Sandy soil in Morris County warms quickly in spring but drains fast. Watercress will need more frequent watering and regular compost additions to retain nutrients.
Organic Matter
Organic matter is low (1.9%). Add 2-3 inches of compost before planting Watercress.
How to Plant Watercress
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Watercress
Sow every 4.6 weeks. Last sowing by Sep 12 to harvest before frost.
For a dedicated fall crop, sow by Sep 02.
Plant Water Budget
Monthly Watering Guide for Watercress
Watercress needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.
| Month | Watercress Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.7" | 0" | ❄️ Dormant |
| Feb | — | 2.4" | 0" | ❄️ Dormant |
| Mar | 6.5" | 4" | 2.5" | 💧 Light watering |
| Apr | 6.5" | 7.4" | 0" | ✅ Rainfall sufficient |
| May | 6.5" | 11.5" | 0" | ✅ Rainfall sufficient |
| Jun | 6.5" | 11.4" | 0" | ✅ Rainfall sufficient |
| Jul | 6.5" | 8.2" | 0" | ✅ Rainfall sufficient |
| Aug | 6.5" | 9.1" | 0" | ✅ Rainfall sufficient |
| Sep | 6.5" | 6.6" | 0" | ✅ Rainfall sufficient |
| Oct | 6.5" | 3.7" | 2.8" | 💧 Light watering |
| Nov | 6.5" | 2.1" | 4.4" | 🚿 Regular watering |
| Dec | — | 1.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Morris County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Watercress 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.
Watercress Planting Timeline — Morris County, TX
Watercress Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 5 | Feb 5 – Feb 19 |
| Transplant Outdoors | March 12 | Mar 12 – Mar 26 |
| Direct Sow | February 26 | Feb 26 – Mar 19 |
| Harvest | April 23 | Apr 23 – May 28 |
| Fall Sowing | September 2 | Sep 2 – Sep 16 |
Plant 0.5" deep · 6" 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 | — |
| July | — |
| August | — |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1.5"/week · Only during dry spells
📅 Days to Maturity
40–60 days
🧪 Soil pH
Needs 6.5–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 8b
📆 Growing Season
244 days in Morris County
Growing Tips for Watercress in Morris County
Direct sow Watercress outdoors after March 12 in Morris County when soil has warmed and frost danger has passed.
Sandy soil in Morris County dries quickly — mulch Watercress 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 Morris County, provide afternoon shade for Watercress and water deeply in the morning.
Your generous 244.0-day season in Morris County allows multiple plantings of Watercress. Sow every 20.0 days for continuous harvest.
Common pests for Watercress in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Grow in containers with trays of water kept fresh. Provide partial shade and cool conditions. Harvest stems by cutting above water level. Replace water frequently to prevent stagnation.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Watercress in Other Locations
Frequently Asked Questions
When should I plant Watercress in Morris County, TX?
Morris County is in Zone 8b with an average last frost of March 12. Plan your Watercress planting based on this frost date — see the calendar above for exact timing.
What planting zone is Morris County, TX?
Morris County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 12 and first fall frost is November 11.
Your Morris County Garden Planner — Free
A 24-page printable planner built for Morris 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.