Blog

When to plant Garlic in Roach, MO

Plant Garlic in Roach, when soil hits 50°F — usually mid-spring. Continue planting through late spring for the spring crop. A second sowing from September 13 to September 27 extends the harvest into fall.

When to Plant Garlic in Roach, MO

Garlic
Camden County, Missouri Zone 6b July

This month in Camden County, Missouri

A quick July briefing for Camden County, Missouri gardeners — what's urgent, what's next, and what can wait.

Avg. last frost April 9
Avg. first frost October 25
Soil temp (4") 80°F
Watering Moderate
Pest pressure High
Daylight 14.4 hrs

Instant PDF download. No spam, unsubscribe any time.

Garlic is a pungent allium planted in fall and harvested the following summer. Hardneck varieties produce edible flower stalks (scapes) and are more cold-hardy.

Roach, Missouri is in USDA Zone 6b. The average last spring frost is April 9 and the first fall frost is October 25, giving you a growing season of approximately 199 days.

At an elevation of 994 feet, Camden County receives approximately 36.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Garlic during the growing season.

Roach, MO (Zone 6b) Moderate season
199 days
Last Spring Frost April 9
199 growing days
First Fall Frost October 25

Roach Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.9

Drainage

Well Drained

Garlic Planting Risk Windows

Early Start (70% safe) ✓ Fits season (0 days to spare)
Transplant: Apr 4 🍅 Harvest: Jul 4 – Oct 17
Recommended (50%) ✓ Fits season (3 days to spare)
Transplant: Apr 9 🍅 Harvest: Jul 9 – Oct 22
Safe Start (90%) ✓ Fits season (4 days to spare)
Transplant: Apr 23 🍅 Harvest: Jul 23 – Nov 5

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 Roach

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

Soil pH

Your soil pH (5.5–6.9) overlaps with Garlic's range (6.0–7.5), though not a perfect match.

Soil Texture

The silt loam soil in Camden County is excellent for Garlic — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Garlic.

How to Plant Garlic

1"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 6 weeks before your first frost date for a fall harvest.

Garlic Water Budget

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

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Garlic

Garlic 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 Garlic Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 1.7" 0" ❄️ Dormant
Mar 2.7" 0" ❄️ Dormant
Apr 2.2" 3.3" 0" ✅ Rainfall sufficient
May 2.2" 4.5" 0" ✅ Rainfall sufficient
Jun 2.2" 3.9" 0" ✅ Rainfall sufficient
Jul 2.2" 3.5" 0" ✅ Rainfall sufficient
Aug 2.2" 4.2" 0" ✅ Rainfall sufficient
Sep 2.2" 3" 0" ✅ Rainfall sufficient
Oct 2.2" 3.1" 0" ✅ Rainfall sufficient
Nov 2.7" 0" ❄️ Dormant
Dec 1.8" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Camden County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Garlic 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.

Garlic needs ~2,516 GDD — county provides 3,034 GDD Good fit

Garlic Planting Timeline — Roach, MO

Garlic Planting Calendar

Activity When Date Range
Harvest December 13 Dec 13 – Mar 28
Fall Sowing September 13 Sep 13 – Sep 27

Plant 1" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January Harvest
February Harvest
March Harvest
April
May
June
July
August
September Fall Sowing
October
November
December Harvest

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

90–240 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

199 days in Camden County

Growing Tips for Garlic in Roach

Direct sow Garlic outdoors after April 09 in Camden County when soil has warmed and frost danger has passed.

Your 199.0-day growing season in Camden County is tight for Garlic (90.0-240.0 days to maturity). Start indoors and choose early-maturing varieties.

Common pests for Garlic in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.

General growing tips

Plant individual cloves pointed end up in fall, 6 weeks before ground freezes. Mulch heavily with straw. Harvest when lower leaves begin to brown but 5-6 green leaves remain.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans
  • Asparagus

Check more plant combinations with our Companion Planting Checker →

When should I plant Garlic in Roach, MO?

In Roach, MO, plant Garlic after the last frost (around April 9) and before the first frost (around October 25). Best results when soil holds above 50°F.

What growing zone is Roach, MO for Garlic?

Roach sits in USDA Zone 6b. Garlic grows reliably in zones 3a through 9b, so it's a good fit here.

Can Garlic grow in Roach's climate?

Yes — Garlic grows well in Roach's temperate climate. Roach averages a 199-day frost-free season, with last frost around April 9 and first frost around October 25.

🌱

Your Camden County Garden Planner — Free

A 22-page printable planner built for Camden 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.

Instant PDF download. No spam, unsubscribe any time.

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