Blog

When to plant Cosmos in Baker County County,

Spring Cosmos in Baker County County goes in February 12–March 5, once nighttime temps stop dipping near freezing.

When to Plant Cosmos in Baker County, GA

Baker County, Georgia Zone 8b June

Baker County, Georgia gardeners: here's your June plan

Here's what deserves your attention in Baker County, Georgia this month. Everything below is tailored to Zone 8b and timed around your local frost dates.

Avg. last frost March 5
Avg. first frost November 21
Soil temp (4") 82°F
Watering Low
Pest pressure High
Daylight 14 hrs
  1. Collect cosmos at their peak

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

Looking ahead to July
  • First harvests: cosmos

Instant PDF download. No spam, unsubscribe any time.

Cosmos (Cosmos bipinnatus) is an airy, feathery-foliaged cottage garden annual from Mexico that thrives on neglect. It produces delicate daisy-like blooms in shades of pink, white, and magenta from midsummer until frost. Cosmos is a prolific self-sower — once established in a garden it often returns year after year without replanting. Excellent habitat plant for beneficial insects.

Baker County, Georgia is in USDA Zone 8b. The average last spring frost is March 5 and the first fall frost is November 21, giving you a growing season of approximately 261 days.

At an elevation of 454 feet, Baker County receives approximately 48.3 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Cosmos during the growing season. Clay soil retains moisture well for Cosmos, but amend with compost to improve drainage and prevent root rot.

Annual Blooms in Summer Pollinator-friendly Good for cutting
Baker County, GA (Zone 8b) Long season
261 days
Last Spring Frost March 5
261 growing days
First Fall Frost November 21

Baker County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.5

Drainage

Well Drained

Cosmos Planting Risk Windows

Early Start (70% safe) ✓ Fits season (63 days to spare)
Start indoors: Jan 24 Transplant: Jan 31 🌸 Bloom: Apr 11 – Sep 12
Recommended (50%) ✓ Fits season (58 days to spare)
Start indoors: Feb 5 Transplant: Feb 12 🌸 Bloom: Apr 23 – Sep 24
Safe Start (90%) ✓ Fits season (61 days to spare)
Start indoors: Feb 26 Transplant: Mar 5 🌸 Bloom: May 14 – Oct 15

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 Baker County

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

Soil pH

Your soil pH (5.7–6.5) overlaps with Cosmos's range (6.0–8.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Cosmos.

How to Plant Cosmos

0.3"
Planting Depth
12"
Between Plants
18"
Between Rows

Succession Planting Cosmos

5
successive plantings in your 261-day season

Sow every 6.9 weeks. Last sowing by Aug 23 to harvest before frost.

Cosmos Water Budget

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

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

Monthly Watering Guide for Cosmos

Cosmos 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 Cosmos Needs Rainfall You Supplement Action
Jan 4.5" 0" ❄️ Dormant
Feb 4.4" 0" ❄️ Dormant
Mar 2.2" 4.5" 0" ✅ Rainfall sufficient
Apr 2.2" 3.4" 0" ✅ Rainfall sufficient
May 2.2" 3.4" 0" ✅ Rainfall sufficient
Jun 2.2" 4" 0" ✅ Rainfall sufficient
Jul 2.2" 5" 0" ✅ Rainfall sufficient
Aug 2.2" 5.1" 0" ✅ Rainfall sufficient
Sep 2.2" 3.3" 0" ✅ Rainfall sufficient
Oct 2.2" 3.1" 0" ✅ Rainfall sufficient
Nov 2.2" 4" 0" ✅ Rainfall sufficient
Dec 3.5" 0" ❄️ Dormant

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

Cosmos 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.

Cosmos needs ~1,425 GDD — county provides 4,959 GDD Excellent fit

Cosmos Planting Timeline — Baker County, GA

Cosmos Planting Calendar

Activity When Date Range
Start Indoors February 5 Feb 5 – Feb 19
Transplant Outdoors February 12 Feb 12 – Feb 26
Direct Sow February 12 Feb 12 – Mar 5
Bloom April 23 Apr 23 – Sep 24

Plant 0.3" deep · 12" apart · Rows 18" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–8 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

261 days in Baker County

Growing Tips for Cosmos in Baker County

Direct sow Cosmos outdoors after March 05 in Baker County when soil has warmed and frost danger has passed.

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

Common pests for Cosmos in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct-sow after last frost; cosmos germinates readily at 65-80°F in 7-10 days. Avoid rich soil — excess fertility produces lush foliage at the expense of blooms. Cosmos tolerates poor, dry soil exceptionally well. Pinch seedlings at 8 inches to encourage branching. Self-sows freely; allow some seed heads to mature and drop for a no-fuss perennial effect in warm climates.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cosmos in Baker County, GA?

Baker County is in Zone 8b with an average last frost of March 5. Plan your Cosmos planting based on this frost date — see the calendar above for exact timing.

What planting zone is Baker County, GA?

Baker County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 5 and first fall frost is November 21.

When should I plant Cosmos in Baker County County, ?

In Baker County County, , plant Cosmos after the last frost (around March 5) and before the first frost (around November 21). Best results when soil holds above 50°F.

What growing zone is Baker County County, for Cosmos?

Baker County County sits in USDA Zone 8b. Cosmos grows reliably in zones 2a through 11b, so it's a good fit here.

Can Cosmos grow in Baker County County's climate?

Yes — Cosmos grows well in Baker County County's temperate climate. Baker County County averages a 261-day frost-free season, with last frost around March 5 and first frost around November 21.

🌱

Your Baker County Garden Planner — Free

A 22-page printable planner built for Baker 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.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Baker County, GA. Local conditions may vary. Last updated: June 2026.

Sources & credits

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