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When to Plant Borage in Richmond County, GA

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.

Richmond County, Georgia is in USDA Zone 8a. The average last spring frost is March 23 and the first fall frost is November 7, giving you a growing season of approximately 229 days.

At an elevation of 82 feet, Richmond County receives approximately 52.7 inches of rainfall annually with predominantly clay loam soil. Summer highs average 96ยฐF, so Borage may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Borage, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Borage root diseases.

Richmond County, GA (Zone 8a) Long season
229 days
Last Spring Frost March 23
229 growing days
First Fall Frost November 7

Richmond County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (133 days to spare)
Start indoors: Feb 9 Transplant: Mar 9 🍅 Harvest: May 4 – Jun 22
Recommended (50%) ✓ Fits season (131 days to spare)
Start indoors: Feb 16 Transplant: Mar 16 🍅 Harvest: May 11 – Jun 29
Safe Start (90%) ✓ Fits season (129 days to spare)
Start indoors: Mar 5 Transplant: Apr 2 🍅 Harvest: May 28 – Jul 16

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 Richmond County

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

Soil pH

Your soil pH (5.7โ€“6.4) overlaps with Borage's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The clay loam soil in Richmond County is excellent for Borage โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). 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 229-day season

Sow every 5.7 weeks. Last sowing by Sep 08 to harvest before frost.

For a dedicated fall crop, sow by Aug 29.

Plant Water Budget

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

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

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 โ€” 4.8" 0" โ„๏ธ Dormant
Feb โ€” 3.6" 0" โ„๏ธ Dormant
Mar 2.2" 5.6" 0" โœ… Rainfall sufficient
Apr 2.2" 3.5" 0" โœ… Rainfall sufficient
May 2.2" 4.2" 0" โœ… Rainfall sufficient
Jun 2.2" 5" 0" โœ… Rainfall sufficient
Jul 2.2" 4.7" 0" โœ… Rainfall sufficient
Aug 2.2" 5.7" 0" โœ… Rainfall sufficient
Sep 2.2" 3.8" 0" โœ… Rainfall sufficient
Oct 2.2" 3.3" 0" โœ… Rainfall sufficient
Nov 2.2" 3.7" 0" โœ… Rainfall sufficient
Dec โ€” 4.7" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Richmond County). Supplement amounts are based on average rainfall โ€” 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" โ€” every day above 50ยฐF 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 ~1,210 GDD — county provides 5,038 GDD Excellent fit

Borage Planting Timeline โ€” Richmond County, GA

Borage Planting Calendar

Activity When Date Range
Start Indoors February 16 Feb 16 โ€“ Mar 2
Transplant Outdoors March 16 Mar 16 โ€“ Mar 30
Direct Sow March 9 Mar 9 โ€“ Mar 30
Harvest May 11 May 11 โ€“ Jun 29
Fall Sowing August 29 Aug 29 โ€“ Sep 12

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.5"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

50โ€“60 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 8a

๐Ÿ“† Growing Season

229 days in Richmond County

Growing Tips for Borage in Richmond County

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

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

With summer highs reaching 96ยฐF in Richmond County, provide afternoon shade for Borage and water deeply in the morning.

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 Richmond County, GA?

Richmond County is in Zone 8a with an average last frost of March 23. Plan your Borage planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Richmond County, GA?

Richmond County, Georgia is in USDA Hardiness Zone 8a. The average last spring frost is March 23 and first fall frost is November 7.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Richmond County gardeners in Zone 8a organize planting dates, track what's growing, and never miss a planting window.

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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 Richmond County, GA. Local conditions may vary. Last updated: April 2026.