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When to plant Marjoram in Rush County, KS

Plant Marjoram in Rush County during the brief May 1–May 15 window. With 174 frost-free days, fall plantings can't mature before October 15.

When to Plant Marjoram in Rush County, KS

Rush County, Kansas Zone 6b June

Rush County, Kansas gardeners: here's your June plan

Here's what deserves your attention in Rush County, Kansas this month. Everything below is tailored to Zone 6b and timed around your local frost dates.

Avg. last frost April 24
Avg. first frost October 15
Soil temp (4") 74°F
Watering Moderate
Pest pressure High
Daylight 14.7 hrs
A few tasks this June that'll pay off in July
  • First harvests: marjoram

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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.

Rush County, Kansas is in USDA Zone 6b. The average last spring frost is April 24 and the first fall frost is October 15, giving you a growing season of approximately 174 days.

At an elevation of 759 feet, Rush County receives approximately 21.7 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Marjoram during the growing season.

Rush County, KS (Zone 6b) Moderate season
174 days
Last Spring Frost April 24
174 growing days
First Fall Frost October 15

Rush County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.3

Drainage

Well Drained

Marjoram Planting Risk Windows

Early Start (70% safe) ✓ Fits season (34 days to spare)
Transplant: Apr 24 🍅 Harvest: Jun 26 – Sep 4
Recommended (50%) ✓ Fits season (34 days to spare)
Transplant: May 1 🍅 Harvest: Jul 3 – Sep 11
Safe Start (90%) ✓ Fits season (30 days to spare)
Transplant: May 18 🍅 Harvest: Jul 20 – Sep 28

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 Rush County

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

Soil pH

Your soil pH (6.4–7.3) overlaps with Marjoram's range (6.5–7.5), though not a perfect match.

Soil Texture

The loam soil in Rush County is excellent for Marjoram — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.4%). Annual compost additions will help Marjoram.

How to Plant Marjoram

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

Succession Planting Marjoram

3
successive plantings in your 174-day season

Sow every 6.9 weeks. Last sowing by Jul 17 to harvest before frost.

Marjoram Water Budget

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

Water stress score is 10/10 — 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 0.5" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.3" 0" ❄️ Dormant
Apr 1.3" 2.1" 0" ✅ Rainfall sufficient
May 1.3" 3.4" 0" ✅ Rainfall sufficient
Jun 1.3" 3.4" 0" ✅ Rainfall sufficient
Jul 1.3" 2.9" 0" ✅ Rainfall sufficient
Aug 1.3" 2.6" 0" ✅ Rainfall sufficient
Sep 1.3" 2.1" 0" ✅ Rainfall sufficient
Oct 1.3" 1.5" 0" ✅ Rainfall sufficient
Nov 0.7" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Rush 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 ~1,088 GDD — county provides 2,523 GDD Excellent fit

Marjoram Planting Timeline — Rush County, KS

Marjoram Planting Calendar

Activity When Date Range
Transplant Outdoors May 1 May 1 – May 15
Harvest July 3 Jul 3 – Sep 11

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

Month-by-Month Timeline

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

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: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

174 days in Rush County

Growing Tips for Marjoram in Rush County

Direct sow Marjoram outdoors after April 24 in Rush County when soil has warmed and frost danger has passed.

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 Rush County, KS?

Rush County is in Zone 6b with an average last frost of April 24. Plan your Marjoram planting based on this frost date — see the calendar above for exact timing.

What planting zone is Rush County, KS?

Rush County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 24 and first fall frost is October 15.

When should I plant Marjoram in Rush County, KS?

In Rush County, KS, plant Marjoram after the last frost (around April 24) and before the first frost (around October 15). Best results when soil holds above 50°F.

What growing zone is Rush County, KS for Marjoram?

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

Can Marjoram grow in Rush County's climate?

Yes — Marjoram grows well in Rush County's temperate climate. Rush County averages a 174-day frost-free season, with last frost around April 24 and first frost around October 15.

🌱

Your Rush County Garden Planner — Free

A 22-page printable planner built for Rush County (Zone 6b). 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 Rush County, KS. 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.