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When to plant Peas in Saline County, IL

Saline County's climate puts the Peas spring window between March 25 and April 15. most warm-season crops establish quickly once soil holds above 60°F. A second sowing from August 15 to August 29 extends the harvest into fall.

When to Plant Peas in Saline County, IL

Peas
Saline County, Illinois Zone 7a July

Your July gardening checklist

July rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Saline County, Illinois.

Avg. last frost April 8
Avg. first frost October 24
Soil temp (4") 82°F
Watering Low
Pest pressure High
Daylight 14.4 hrs
  1. Start harvesting peas

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

Before August arrives, get these ready
  • Fall sowing: peas

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Peas are a cool-season legume that fixes nitrogen in the soil. Garden peas are shelled, while snap and snow peas are eaten pod and all.

Saline County, Illinois is in USDA Zone 7a. The average last spring frost is April 8 and the first fall frost is October 24, giving you a growing season of approximately 199 days.

At an elevation of 748 feet, Saline County receives approximately 41.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Peas during the growing season.

Saline County, IL (Zone 7a) Moderate season
199 days
Last Spring Frost April 8
199 growing days
First Fall Frost October 24

Saline County Soil Profile

Soil Type

Silt Loam

Soil pH

6-6.7

Drainage

Well Drained

Peas Planting Risk Windows

Early Start (70% safe) ✓ Fits season (84 days to spare)
Start indoors: Feb 28 Transplant: Apr 4 🍅 Harvest: May 30 – Jul 25
Recommended (50%) ✓ Fits season (87 days to spare)
Start indoors: Mar 4 Transplant: Apr 8 🍅 Harvest: Jun 3 – Jul 29
Safe Start (90%) ✓ Fits season (94 days to spare)
Start indoors: Mar 17 Transplant: Apr 21 🍅 Harvest: Jun 16 – Aug 11

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 Saline County

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

Soil pH

Your soil pH (6.0–6.7) is within Peas's preferred range (6.0–7.5).

Soil Texture

The silt loam soil in Saline County is excellent for Peas — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.9%). Annual compost additions will help Peas.

How to Plant Peas

1"
Planting Depth
4"
Between Plants
18"
Between Rows

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

Succession Planting Peas

4
successive plantings in your 199-day season

Sow every 6.3 weeks. Last sowing by Aug 15 to harvest before frost.

For a dedicated fall crop, sow by Aug 15.

Peas Water Budget

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

Monthly Watering Guide for Peas

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

Month Peas Needs Rainfall You Supplement Action
Jan 1.7" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 3.2" 0" ❄️ Dormant
Apr 3" 4.3" 0" ✅ Rainfall sufficient
May 3" 4.7" 0" ✅ Rainfall sufficient
Jun 3" 4.6" 0" ✅ Rainfall sufficient
Jul 3" 4.8" 0" ✅ Rainfall sufficient
Aug 3" 4.5" 0" ✅ Rainfall sufficient
Sep 3" 3.2" 0" ✅ Rainfall sufficient
Oct 3" 2.9" 0.1" 💧 Light watering
Nov 2.9" 0" ❄️ Dormant
Dec 2.2" 0" ❄️ Dormant

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

Peas 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.

Peas needs ~1,000 GDD — county provides 3,184 GDD Excellent fit

Peas Planting Timeline — Saline County, IL

Peas Planting Calendar

Activity When Date Range
Start Indoors March 4 Mar 4 – Mar 18
Transplant Outdoors April 8 Apr 8 – Apr 22
Direct Sow March 25 Mar 25 – Apr 15
Harvest June 3 Jun 3 – Jul 29
Fall Sowing August 15 Aug 15 – Aug 29

Plant 1" deep · 4" apart · Rows 18" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

55–70 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 7a

📆 Growing Season

199 days in Saline County

Growing Tips for Peas in Saline County

Direct sow Peas outdoors after April 08 in Saline County when soil has warmed and frost danger has passed.

Common pests for Peas in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow as early as soil can be worked in spring. Inoculate seeds with rhizobium for best nitrogen fixation. Provide trellising for climbing varieties.

Recommended Peas Varieties for Saline County

Heat-tolerant peas — plant very early or as fall crop

Wando (68d) Oregon Sugar Pod (60d)

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Peas Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Let pods dry brown and papery on the vine.
Storage Store airtight; viable 3 years at 35°F, under 45% humidity.

Very easy to save. Self-pollinating means varieties stay true.

Frequently Asked Questions

When should I plant Peas in Saline County, IL?

Saline County is in Zone 7a with an average last frost of April 8. Plan your Peas planting based on this frost date — see the calendar above for exact timing.

What planting zone is Saline County, IL?

Saline County, Illinois is in USDA Hardiness Zone 7a. The average last spring frost is April 8 and first fall frost is October 24.

When should I plant Peas in Saline County, IL?

In Saline County, IL, plant Peas after the last frost (around April 8) and before the first frost (around October 24). Best results when soil holds above 50°F.

What growing zone is Saline County, IL for Peas?

Saline County sits in USDA Zone 7a. Peas grows reliably in zones 2a through 11b, so it's a good fit here.

Can Peas grow in Saline County's climate?

Yes — Peas grows well in Saline County's temperate climate. Saline County averages a 199-day frost-free season, with last frost around April 8 and first frost around October 24.

🌱

Your Saline County Garden Planner — Free

A 22-page printable planner built for Saline County (Zone 7a). 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 Saline County, IL. Local conditions may vary. Last updated: July 2026.

Sources & credits

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