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When to plant Marjoram in Glynn County County,

Glynn County County's short 308-day growing season means one Marjoram planting between February 16 and March 2. No fall crop in Zone 9a.

When to Plant Marjoram in Glynn County, GA

Glynn County, Georgia Zone 9a June

Your June game plan for Glynn County, Georgia

Welcome to June in Zone 9a. These are the moves that will have the biggest impact on your growing season.

Avg. last frost February 9
Avg. first frost December 13
Soil temp (4") 88°F
Watering Low
Pest pressure High
Daylight 14 hrs
  1. Start harvesting marjoram

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

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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.

Glynn County, Georgia is in USDA Zone 9a. The average last spring frost is February 9 and the first fall frost is December 13, giving you a growing season of approximately 307 days.

At an elevation of 135 feet, Glynn County receives approximately 55.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97°F, so Marjoram may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — 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.

Glynn County, GA (Zone 9a) Year-round
307 days
Last Spring Frost February 9
307 growing days
First Fall Frost December 13
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Glynn County Soil Profile

Soil Type

Sandy Loam

Soil pH

4.9-6.2

Drainage

Well Drained

Marjoram Planting Risk Windows

Early Start (70% safe) ✓ Fits season (172 days to spare)
Transplant: Feb 3 🍅 Harvest: Apr 7 – Jun 16
Recommended (50%) ✓ Fits season (167 days to spare)
Transplant: Feb 16 🍅 Harvest: Apr 20 – Jun 29
Safe Start (90%) ✓ Fits season (151 days to spare)
Transplant: Mar 16 🍅 Harvest: May 18 – Jul 27

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 Glynn County

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

Soil pH

Your soil pH (4.9–6.2) is more acidic than Marjoram prefers (6.5–7.5). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Marjoram.

Organic Matter

Organic matter is low (1.8%). 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

6
successive plantings in your 307-day season

Sow every 6.9 weeks. Last sowing by Sep 14 to harvest before frost.

Marjoram Water Budget

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

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 4.4" 0" ❄️ Dormant
Feb 1.3" 3.9" 0" ✅ Rainfall sufficient
Mar 1.3" 4.6" 0" ✅ Rainfall sufficient
Apr 1.3" 4.7" 0" ✅ Rainfall sufficient
May 1.3" 3.9" 0" ✅ Rainfall sufficient
Jun 1.3" 5.5" 0" ✅ Rainfall sufficient
Jul 1.3" 5.2" 0" ✅ Rainfall sufficient
Aug 1.3" 5.8" 0" ✅ Rainfall sufficient
Sep 1.3" 4.8" 0" ✅ Rainfall sufficient
Oct 1.3" 3.6" 0" ✅ Rainfall sufficient
Nov 1.3" 4.2" 0" ✅ Rainfall sufficient
Dec 1.3" 4.7" 0" ✅ Rainfall sufficient

Water needs are for active growing months only (Feb–Dec in Glynn County). Supplement amounts are based on average rainfall — 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" — 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.

Marjoram needs ~1,706 GDD — county provides 7,007 GDD Excellent fit

Marjoram Planting Timeline — Glynn County, GA

Marjoram Planting Calendar

Activity When Date Range
Transplant Outdoors February 16 Feb 16 – Mar 2
Harvest April 20 Apr 20 – Jun 29

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

Month-by-Month Timeline

MonthActivities
January
February Transplant Outdoors
March Transplant Outdoors
April Harvest
May Harvest
June Harvest
July
August
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.3"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6.5–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

307 days in Glynn County

Growing Tips for Marjoram in Glynn County

Direct sow Marjoram outdoors after February 09 in Glynn County when soil has warmed and frost danger has passed.

Sandy soil in Glynn County dries quickly — 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 97°F in Glynn County, provide afternoon shade for Marjoram and water deeply in the morning.

With 55" of annual rainfall in Glynn County, ensure good drainage for Marjoram — excess moisture can promote root rot and fungal diseases.

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 Glynn County, GA?

Glynn County is in Zone 9a with an average last frost of February 9. Plan your Marjoram planting based on this frost date — see the calendar above for exact timing.

What planting zone is Glynn County, GA?

Glynn County, Georgia is in USDA Hardiness Zone 9a. The average last spring frost is February 9 and first fall frost is December 13.

When should I plant Marjoram in Glynn County County, ?

In Glynn County County, , plant Marjoram after the last frost (around February 9) and before the first frost (around December 13). Best results when soil holds above 50°F.

What growing zone is Glynn County County, for Marjoram?

Glynn County County sits in USDA Zone 9a. Marjoram grows reliably in zones 6a through 10b, so it's a good fit here.

Can Marjoram grow in Glynn County County's climate?

Yes — Marjoram grows well in Glynn County County's temperate climate. Glynn County County averages a 308-day frost-free season, with last frost around February 9 and first frost around December 13.

🌱

Your Glynn County Garden Planner — Free

A 22-page printable planner built for Glynn 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.

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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 Glynn County, GA. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.