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When to Plant Spinach in Baldwin County, AL

Baldwin County, Alabama Zone 9a May

May in Baldwin County, Alabama — your action list

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

Avg. last frost March 3
Avg. first frost November 24
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Harvest spinach as they ripen

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

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

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Spinach is a nutrient-packed cool-season green that grows quickly in spring and fall. It is rich in iron, vitamins, and antioxidants and excellent raw or cooked.

Baldwin County, Alabama is in USDA Zone 9a. The average last spring frost is March 3 and the first fall frost is November 24, giving you a growing season of approximately 266 days.

At an elevation of 336 feet, Baldwin County receives approximately 53 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Spinach may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Spinach will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Spinach root diseases.

Baldwin County, AL (Zone 9a) Long season
266 days
Last Spring Frost March 3
266 growing days
First Fall Frost November 24
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Baldwin County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.1-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (173 days to spare)
Start indoors: Jan 22 Transplant: Feb 19 🍅 Harvest: Mar 26 – May 28
Recommended (50%) ✓ Fits season (168 days to spare)
Start indoors: Feb 3 Transplant: Mar 3 🍅 Harvest: Apr 7 – Jun 9
Safe Start (90%) ✓ Fits season (168 days to spare)
Start indoors: Feb 20 Transplant: Mar 20 🍅 Harvest: Apr 24 – Jun 26

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 Baldwin County

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

Soil pH

Your soil pH (5.1–6.2) is more acidic than Spinach prefers (6.5–7.5). Add garden lime to raise pH.

Soil Texture

Sandy soil in Baldwin County warms quickly in spring but drains fast. Spinach will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Spinach.

Organic Matter

Organic matter is low (1.9%). Add 2-3 inches of compost before planting Spinach.

How to Plant Spinach

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Spinach

9
successive plantings in your 266-day season

Sow every 4 weeks. Last sowing by Oct 05 to harvest before frost.

For a dedicated fall crop, sow by Sep 29.

Plant Water Budget

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

Monthly Watering Guide for Spinach

Spinach needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Spinach Needs Rainfall You Supplement Action
Jan 4.6" 0" ❄️ Dormant
Feb 4.4" 0" ❄️ Dormant
Mar 3" 5.2" 0" ✅ Rainfall sufficient
Apr 3" 4.1" 0" ✅ Rainfall sufficient
May 3" 4.5" 0" ✅ Rainfall sufficient
Jun 3" 3.9" 0" ✅ Rainfall sufficient
Jul 3" 5.3" 0" ✅ Rainfall sufficient
Aug 3" 5.5" 0" ✅ Rainfall sufficient
Sep 3" 3.8" 0" ✅ Rainfall sufficient
Oct 3" 2.9" 0.1" 💧 Light watering
Nov 3" 4.1" 0" ✅ Rainfall sufficient
Dec 4.6" 0" ❄️ Dormant

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

Spinach 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.

Spinach needs ~903 GDD — county provides 5,652 GDD Excellent fit

Spinach Planting Timeline — Baldwin County, AL

Spinach Planting Calendar

Activity When Date Range
Start Indoors February 3 Feb 3 – Feb 17
Transplant Outdoors March 3 Mar 3 – Mar 17
Direct Sow February 10 Feb 10 – Mar 3
Harvest April 7 Apr 7 – Jun 9
Fall Sowing September 29 Sep 29 – Oct 13

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

35–50 days

🧪 Soil pH

Needs 6.5–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

266 days in Baldwin County

Growing Tips for Spinach in Baldwin County

Direct sow Spinach outdoors after March 03 in Baldwin County when soil has warmed and frost danger has passed.

Sandy soil in Baldwin County dries quickly — mulch Spinach with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Summer highs in Baldwin County reach 95°F — grow Spinach as a spring or fall crop. Use shade cloth if planting in summer.

Your generous 266.0-day season in Baldwin County allows multiple plantings of Spinach. Sow every 17.0 days for continuous harvest.

General growing tips

Direct sow as soon as soil can be worked in spring. Plant in partial shade for summer crops to delay bolting. Succession plant every 2 weeks for continuous harvest.

Recommended Spinach Varieties for Baldwin County

Slow-bolting spinach for warm springs — best as fall crop here

Bloomsdale Long Standing Tyee Space

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Spinach Seeds
Life Cycle Annual
Pollination Wind Pollinated
How to Collect Let plants bolt. Harvest seed stalks when seeds turn tan.
Storage Store airtight; viable 5 years at 35°F, under 45% humidity.

Wind pollinated — isolate 1/2 mile for purity. Easy to let bolt in heat.

Frequently Asked Questions

When should I plant Spinach in Baldwin County, AL?

Baldwin County is in Zone 9a with an average last frost of March 3. Plan your Spinach planting based on this frost date — see the calendar above for exact timing.

What planting zone is Baldwin County, AL?

Baldwin County, Alabama is in USDA Hardiness Zone 9a. The average last spring frost is March 3 and first fall frost is November 24.

🌱

Your Baldwin County Garden Planner — Free

A 24-page printable planner built for Baldwin County (Zone 9a). 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 Baldwin County, AL. 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.