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When to Plant Sorrel in Avery County, NC

Avery County, North Carolina Zone 6b May

Avery County, North Carolina gardeners: here's your May plan

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost April 12
Avg. first frost October 23
Soil temp (4") 65°F
Watering Low
Pest pressure Low
Daylight 13.9 hrs
  1. Time to start sorrel inside

    Label every cell. You will absolutely forget which is which otherwise.

  2. Start harvesting sorrel

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Looking ahead to June
  • First harvests: sorrel

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Sorrel is a perennial herb with tangy, lemon-flavored arrow-shaped leaves. It is one of the first greens to emerge in spring and is used in soups and salads.

Avery County, North Carolina is in USDA Zone 6b. The average last spring frost is April 12 and the first fall frost is October 23, giving you a growing season of approximately 194 days.

At an elevation of 914 feet, Avery County receives approximately 43.7 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Sorrel during the growing season. Clay soil retains moisture well for Sorrel, but amend with compost to improve drainage and prevent root rot.

Avery County, NC (Zone 6b) Moderate season
194 days
Last Spring Frost April 12
194 growing days
First Fall Frost October 23

Avery County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (98 days to spare)
Start indoors: Mar 2 Transplant: Mar 30 🍅 Harvest: May 11 – Jul 13
Recommended (50%) ✓ Fits season (96 days to spare)
Start indoors: Mar 8 Transplant: Apr 5 🍅 Harvest: May 17 – Jul 19
Safe Start (90%) ✓ Fits season (92 days to spare)
Start indoors: Mar 25 Transplant: Apr 22 🍅 Harvest: Jun 3 – Aug 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 Avery County

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

Soil pH

Your soil pH (5.3–6.2) overlaps with Sorrel's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Sorrel.

How to Plant Sorrel

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

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

Succession Planting Sorrel

5
successive plantings in your 194-day season

Sow every 4.6 weeks. Last sowing by Aug 24 to harvest before frost.

For a dedicated fall crop, sow by Aug 14.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 112 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Sorrel

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

Month Sorrel Needs Rainfall You Supplement Action
Jan 3.4" 0" ❄️ Dormant
Feb 3.2" 0" ❄️ Dormant
Mar 4.7" 0" ❄️ Dormant
Apr 4.3" 3.6" 0.7" 💧 Light watering
May 4.3" 4" 0.3" 💧 Light watering
Jun 4.3" 4.4" 0" ✅ Rainfall sufficient
Jul 4.3" 4.1" 0.2" 💧 Light watering
Aug 4.3" 3.7" 0.6" 💧 Light watering
Sep 4.3" 3.2" 1.1" 💧 Light watering
Oct 4.3" 2.5" 1.8" 💧 Light watering
Nov 3.8" 0" ❄️ Dormant
Dec 3.2" 0" ❄️ Dormant

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

Sorrel 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.

Sorrel needs ~912 GDD — county provides 3,540 GDD Excellent fit

Sorrel Planting Timeline — Avery County, NC

Sorrel Planting Calendar

Activity When Date Range
Start Indoors March 8 Mar 8 – Mar 22
Transplant Outdoors April 5 Apr 5 – Apr 19
Direct Sow March 29 Mar 29 – Apr 19
Harvest May 17 May 17 – Jul 19
Fall Sowing August 14 Aug 14 – Aug 28

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

194 days in Avery County

Growing Tips for Sorrel in Avery County

Direct sow Sorrel outdoors after April 12 in Avery County when soil has warmed and frost danger has passed.

With Avery County's clay soil (26% clay), work in 3-4 inches of compost before planting Sorrel. Avoid tilling when soil is wet to prevent compaction.

Your generous 194.0-day season in Avery County allows multiple plantings of Sorrel. Sow every 20.0 days for continuous harvest.

General growing tips

Direct sow in early spring or fall. Remove flower stalks promptly to encourage leaf production. Divide clumps every 3-4 years. Young leaves have the best flavor.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Sorrel in Avery County, NC?

Avery County is in Zone 6b with an average last frost of April 12. Plan your Sorrel planting based on this frost date — see the calendar above for exact timing.

What planting zone is Avery County, NC?

Avery County, North Carolina is in USDA Hardiness Zone 6b. The average last spring frost is April 12 and first fall frost is October 23.

🌱

Your Avery County Garden Planner — Free

A 24-page printable planner built for Avery 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 Avery 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.