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When to Plant Marjoram in Reagan County, TX

Sweet marjoram is a tender perennial herb with a delicate, sweet oregano-like flavor. It is a cornerstone of Mediterranean cooking and pairs well with meats and vegetables.

Reagan County, Texas is in USDA Zone 7b. The average last spring frost is March 30 and the first fall frost is November 9, giving you a growing season of approximately 224 days.

At an elevation of 3,983 feet, Reagan County receives approximately 51.9 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97ยฐF, so Marjoram may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Marjoram will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Marjoram root diseases.

Reagan County, TX (Zone 7b) Long season
224 days
Last Spring Frost March 30
224 growing days
First Fall Frost November 9

Reagan County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.7-8.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (88 days to spare)
Transplant: Mar 24 🍅 Harvest: May 26 – Aug 4
Recommended (50%) ✓ Fits season (84 days to spare)
Transplant: Apr 6 🍅 Harvest: Jun 8 – Aug 17
Safe Start (90%) ✓ Fits season (86 days to spare)
Transplant: Apr 22 🍅 Harvest: Jun 24 – Sep 2

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 Reagan County

How your county's soil matches Marjoram's growing requirements.

Soil pH

Your soil pH (7.7โ€“8.9) is more alkaline than Marjoram prefers (6.5โ€“7.5). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Reagan County warms quickly in spring but drains fast. Marjoram will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.1%). Add 2-3 inches of compost before planting Marjoram.

How to Plant Marjoram

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Marjoram

4
successive plantings in your 224-day season

Sow every 6.9 weeks. Last sowing by Aug 11 to harvest before frost.

Plant Water Budget

Plant needs
0.3″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Monthly Watering Guide for Marjoram

Marjoram needs approximately 0.3 inches of water per week (1.3" per month). Here's how your county's rainfall compares month by month.

Month Marjoram Needs Rainfall You Supplement Action
Jan โ€” 3.9" 0" โ„๏ธ Dormant
Feb โ€” 2.9" 0" โ„๏ธ Dormant
Mar 1.3" 2.6" 0" โœ… Rainfall sufficient
Apr 1.3" 1.9" 0" โœ… Rainfall sufficient
May 1.3" 1.4" 0" โœ… Rainfall sufficient
Jun 1.3" 1.5" 0" โœ… Rainfall sufficient
Jul 1.3" 9.8" 0" โœ… Rainfall sufficient
Aug 1.3" 10.2" 0" โœ… Rainfall sufficient
Sep 1.3" 7" 0" โœ… Rainfall sufficient
Oct 1.3" 4.4" 0" โœ… Rainfall sufficient
Nov 1.3" 3" 0" โœ… Rainfall sufficient
Dec โ€” 3.5" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Reagan County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Marjoram 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" โ€” every day above 50ยฐF 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.

Marjoram needs ~1,706 GDD — county provides 5,096 GDD Excellent fit

Marjoram Planting Timeline โ€” Reagan County, TX

Marjoram Planting Calendar

Activity When Date Range
Transplant Outdoors April 6 Apr 6 โ€“ Apr 20
Harvest June 8 Jun 8 โ€“ Aug 17

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Transplant Outdoors
May โ€”
June Harvest
July Harvest
August Harvest
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.3"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

60โ€“90 days

๐Ÿงช Soil pH

Needs 6.5โ€“7.5 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

224 days in Reagan County

Growing Tips for Marjoram in Reagan County

Direct sow Marjoram outdoors after March 30 in Reagan County when soil has warmed and frost danger has passed.

Sandy soil in Reagan County dries quickly โ€” mulch Marjoram with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 97ยฐF in Reagan County, provide afternoon shade for Marjoram and water deeply in the morning.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Harvest stems just as flower buds appear for peak flavor. In cold climates, grow as an annual or bring containers indoors.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Marjoram in Reagan County, TX?

Reagan County is in Zone 7b with an average last frost of March 30. Plan your Marjoram planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Reagan County, TX?

Reagan County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 30 and first fall frost is November 9.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Reagan County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Reagan County, TX. Local conditions may vary. Last updated: April 2026.