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When to Plant Chard in McDowell County, NC

McDowell County, North Carolina Zone 7b May

Top priorities for McDowell County, North Carolina gardeners in May

May is a pivotal month for McDowell County, North Carolina gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 9
Avg. first frost October 26
Soil temp (4") 62°F
Watering Moderate
Pest pressure Moderate
Daylight 13.9 hrs
  1. Time to start chard inside

    Starting these indoors now means sturdy transplants ready the moment your soil warms up.

Before June arrives, get these ready
  • First harvests: chard

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Swiss chard is a colorful, heat-tolerant green with large crinkled leaves and vibrant stalks in red, yellow, and white. Both the leaves and stems are edible and nutritious.

McDowell County, North Carolina is in USDA Zone 7b. The average last spring frost is April 9 and the first fall frost is October 26, giving you a growing season of approximately 200 days.

At an elevation of 2,344 feet, McDowell County receives approximately 51.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Chard during the growing season. Clay soil retains moisture well for Chard, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Chard root diseases.

McDowell County, NC (Zone 7b) Long season
200 days
Last Spring Frost April 9
200 growing days
First Fall Frost October 26

McDowell County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (94 days to spare)
Start indoors: Feb 28 Transplant: Apr 4 🍅 Harvest: May 30 – Jul 18
Recommended (50%) ✓ Fits season (95 days to spare)
Start indoors: Mar 5 Transplant: Apr 9 🍅 Harvest: Jun 4 – Jul 23
Safe Start (90%) ✓ Fits season (89 days to spare)
Start indoors: Mar 23 Transplant: Apr 27 🍅 Harvest: Jun 22 – Aug 10

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 McDowell County

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

Soil pH

Your soil pH (5.6–6.2) is more acidic than Chard prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The clay loam soil in McDowell County is excellent for Chard — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Chard.

Organic Matter

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

How to Plant Chard

1"
Planting Depth
15"
Between Plants
24"
Between Rows

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

Succession Planting Chard

4
successive plantings in your 200-day season

Sow every 5.7 weeks. Last sowing by Aug 27 to harvest before frost.

For a dedicated fall crop, sow by Aug 17.

Plant Water Budget

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

Monthly Watering Guide for Chard

Chard needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Chard Needs Rainfall You Supplement Action
Jan 4.4" 0" ❄️ Dormant
Feb 4.5" 0" ❄️ Dormant
Mar 4.7" 0" ❄️ Dormant
Apr 3.5" 4.2" 0" ✅ Rainfall sufficient
May 3.5" 3.7" 0" ✅ Rainfall sufficient
Jun 3.5" 4.3" 0" ✅ Rainfall sufficient
Jul 3.5" 6" 0" ✅ Rainfall sufficient
Aug 3.5" 5.2" 0" ✅ Rainfall sufficient
Sep 3.5" 3.6" 0" ✅ Rainfall sufficient
Oct 3.5" 2.9" 0.6" 💧 Light watering
Nov 3.8" 0" ❄️ Dormant
Dec 4.1" 0" ❄️ Dormant

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

Chard 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.

Chard needs ~1,004 GDD — county provides 3,650 GDD Excellent fit

Chard Planting Timeline — McDowell County, NC

Chard Planting Calendar

Activity When Date Range
Start Indoors March 5 Mar 5 – Mar 19
Transplant Outdoors April 9 Apr 9 – Apr 23
Direct Sow March 26 Mar 26 – Apr 16
Harvest June 4 Jun 4 – Jul 23
Fall Sowing August 17 Aug 17 – Aug 31

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.8"/week · Natural rainfall sufficient

📅 Days to Maturity

50–60 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7b

📆 Growing Season

200 days in McDowell County

Growing Tips for Chard in McDowell County

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

With McDowell County's clay soil (34% clay), work in 3-4 inches of compost before planting Chard. Avoid tilling when soil is wet to prevent compaction.

Summer highs in McDowell County reach 91°F — grow Chard as a spring or fall crop. Use shade cloth if planting in summer.

General growing tips

Direct sow or transplant after last frost. Harvest outer leaves regularly to encourage continuous production. Chard tolerates both heat and light frost.

Companion Planting

Good Companions

Avoid Planting Near

  • Corn
  • Cucumbers

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Chard in McDowell County, NC?

McDowell County is in Zone 7b with an average last frost of April 9. Plan your Chard planting based on this frost date — see the calendar above for exact timing.

What planting zone is McDowell County, NC?

McDowell County, North Carolina is in USDA Hardiness Zone 7b. The average last spring frost is April 9 and first fall frost is October 26.

🌱

Your McDowell County Garden Planner — Free

A 24-page printable planner built for McDowell County (Zone 7b). 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 McDowell County, NC. 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.