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When to Plant Mache in Aiken County, SC

Aiken County, South Carolina Zone 8b May

Top priorities for Aiken County, South Carolina gardeners in May

Your garden in Aiken County, South Carolina is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost March 23
Avg. first frost November 8
Soil temp (4") 72°F
Watering Moderate
Pest pressure High
Daylight 13.7 hrs
  1. Collect mache at their peak

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

June prep starts now
  • First harvests: mache

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Mache (corn salad) is a cold-hardy salad green with small, rounded, tender leaves and a mild, nutty flavor. It thrives in cool weather and even overwinters in many climates.

Aiken County, South Carolina is in USDA Zone 8b. The average last spring frost is March 23 and the first fall frost is November 8, giving you a growing season of approximately 230 days.

At an elevation of 86 feet, Aiken County receives approximately 48.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 92°F, providing good warmth for Mache during the growing season. Sandy soil warms quickly in spring — great for early planting — but Mache will need more frequent watering and organic matter to retain nutrients.

Aiken County, SC (Zone 8b) Long season
230 days
Last Spring Frost March 23
230 growing days
First Fall Frost November 8

Aiken County Soil Profile

Soil Type

Sandy Loam

Soil pH

5-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (152 days to spare)
Start indoors: Feb 10 Transplant: Mar 17 🍅 Harvest: Apr 28 – Jun 2
Recommended (50%) ✓ Fits season (153 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: May 4 – Jun 8
Safe Start (90%) ✓ Fits season (155 days to spare)
Start indoors: Mar 5 Transplant: Apr 9 🍅 Harvest: May 21 – Jun 25

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 Aiken County

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

Soil pH

Your soil pH (5.0–6.2) is more acidic than Mache prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Mache.

Organic Matter

Organic matter is low (1.9%). Add 2-3 inches of compost before planting Mache.

How to Plant Mache

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Mache

6
successive plantings in your 230-day season

Sow every 4.6 weeks. Last sowing by Sep 09 to harvest before frost.

For a dedicated fall crop, sow by Aug 30.

Plant Water Budget

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

Monthly Watering Guide for Mache

Mache needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Mache Needs Rainfall You Supplement Action
Jan 4.1" 0" ❄️ Dormant
Feb 3.9" 0" ❄️ Dormant
Mar 4.3" 5" 0" ✅ Rainfall sufficient
Apr 4.3" 4.1" 0.2" 💧 Light watering
May 4.3" 3.7" 0.6" 💧 Light watering
Jun 4.3" 3.8" 0.5" 💧 Light watering
Jul 4.3" 4.7" 0" ✅ Rainfall sufficient
Aug 4.3" 4.5" 0" ✅ Rainfall sufficient
Sep 4.3" 4.1" 0.2" 💧 Light watering
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 3.2" 1.1" 💧 Light watering
Dec 4" 0" ❄️ Dormant

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

Mache 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.

Mache needs ~950 GDD — county provides 4,370 GDD Excellent fit

Mache Planting Timeline — Aiken County, SC

Mache Planting Calendar

Activity When Date Range
Start Indoors February 16 Feb 16 – Mar 2
Transplant Outdoors March 23 Mar 23 – Apr 6
Direct Sow March 9 Mar 9 – Mar 30
Harvest May 4 May 4 – Jun 8
Fall Sowing August 30 Aug 30 – Sep 13

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March Start Indoors Transplant Outdoors Direct Sow
April Transplant Outdoors
May Harvest
June Harvest
July
August Fall Sowing
September Fall Sowing
October
November
December

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8b

📆 Growing Season

230 days in Aiken County

Growing Tips for Mache in Aiken County

Direct sow Mache outdoors after March 23 in Aiken County when soil has warmed and frost danger has passed.

Sandy soil in Aiken County dries quickly — mulch Mache with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Your generous 230.0-day season in Aiken County allows multiple plantings of Mache. Sow every 20.0 days for continuous harvest.

General growing tips

Direct sow in early spring or late summer for fall and winter harvest. Seeds need light to germinate so press gently into soil surface. Harvest whole rosettes.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Mache in Aiken County, SC?

Aiken County is in Zone 8b with an average last frost of March 23. Plan your Mache planting based on this frost date — see the calendar above for exact timing.

What planting zone is Aiken County, SC?

Aiken County, South Carolina is in USDA Hardiness Zone 8b. The average last spring frost is March 23 and first fall frost is November 8.

🌱

Your Aiken County Garden Planner — Free

A 24-page printable planner built for Aiken 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.

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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 Aiken County, SC. Local conditions may vary. Last updated: May 2026.

Sources & credits

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