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When to Plant Borage in Montgomery County, NC

Montgomery County, North Carolina Zone 8a May

What to do in May

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

Avg. last frost March 29
Avg. first frost November 2
Soil temp (4") 68°F
Watering Moderate
Pest pressure Moderate
Daylight 13.9 hrs
  1. Indoor seed-starting week for borage

    You're about 26 weeks out from your last frost — the perfect window to get these germinating indoors.

  2. Harvest borage as they ripen

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

A few tasks this May that'll pay off in June
  • First harvests: borage

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Borage is a self-seeding annual herb with star-shaped blue flowers that attract pollinators. Its leaves have a cucumber-like flavor and the flowers are edible.

Montgomery County, North Carolina is in USDA Zone 8a. The average last spring frost is March 29 and the first fall frost is November 2, giving you a growing season of approximately 218 days.

At an elevation of 163 feet, Montgomery County receives approximately 42.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90°F, providing good warmth for Borage during the growing season. Clay soil retains moisture well for Borage, but amend with compost to improve drainage and prevent root rot.

Montgomery County, NC (Zone 8a) Long season
218 days
Last Spring Frost March 29
218 growing days
First Fall Frost November 2
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Montgomery County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (121 days to spare)
Start indoors: Feb 15 Transplant: Mar 15 🍅 Harvest: May 10 – Jun 28
Recommended (50%) ✓ Fits season (120 days to spare)
Start indoors: Feb 22 Transplant: Mar 22 🍅 Harvest: May 17 – Jul 5
Safe Start (90%) ✓ Fits season (113 days to spare)
Start indoors: Mar 12 Transplant: Apr 9 🍅 Harvest: Jun 4 – Jul 23

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 Montgomery County

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

Soil pH

Your soil pH (5.3–6.7) overlaps with Borage's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.3%). Annual compost additions will help Borage.

How to Plant Borage

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 Borage

5
successive plantings in your 218-day season

Sow every 5.7 weeks. Last sowing by Sep 03 to harvest before frost.

For a dedicated fall crop, sow by Aug 24.

Plant Water Budget

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

Monthly Watering Guide for Borage

Borage 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 Borage Needs Rainfall You Supplement Action
Jan 3.4" 0" ❄️ Dormant
Feb 3.7" 0" ❄️ Dormant
Mar 2.2" 4.2" 0" ✅ Rainfall sufficient
Apr 2.2" 3" 0" ✅ Rainfall sufficient
May 2.2" 3.4" 0" ✅ Rainfall sufficient
Jun 2.2" 3.7" 0" ✅ Rainfall sufficient
Jul 2.2" 5.1" 0" ✅ Rainfall sufficient
Aug 2.2" 4.4" 0" ✅ Rainfall sufficient
Sep 2.2" 3.1" 0" ✅ Rainfall sufficient
Oct 2.2" 2.6" 0" ✅ Rainfall sufficient
Nov 2.2" 3.2" 0" ✅ Rainfall sufficient
Dec 3.2" 0" ❄️ Dormant

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

Borage 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.

Borage needs ~962 GDD — county provides 3,815 GDD Excellent fit

Borage Planting Timeline — Montgomery County, NC

Borage Planting Calendar

Activity When Date Range
Start Indoors February 22 Feb 22 – Mar 8
Transplant Outdoors March 22 Mar 22 – Apr 5
Direct Sow March 15 Mar 15 – Apr 5
Harvest May 17 May 17 – Jul 5
Fall Sowing August 24 Aug 24 – Sep 7

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

50–60 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

218 days in Montgomery County

Growing Tips for Borage in Montgomery County

Direct sow Borage outdoors after March 29 in Montgomery County when soil has warmed and frost danger has passed.

With Montgomery County's clay soil (32% clay), work in 3-4 inches of compost before planting Borage. Avoid tilling when soil is wet to prevent compaction.

General growing tips

Direct sow in spring as borage does not transplant well. Allow some plants to go to seed for next year. Young leaves are best; older leaves become bristly.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Borage in Montgomery County, NC?

Montgomery County is in Zone 8a with an average last frost of March 29. Plan your Borage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Montgomery County, NC?

Montgomery County, North Carolina is in USDA Hardiness Zone 8a. The average last spring frost is March 29 and first fall frost is November 2.

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Your Montgomery County Garden Planner — Free

A 24-page printable planner built for Montgomery County (Zone 8a). 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 Montgomery 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.