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When to Plant Lettuce in Scotts Bluff County, NE

Scotts Bluff County, Nebraska Zone 5a May

What to do in May

Your Scotts Bluff County, Nebraska garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost May 13
Avg. first frost September 25
Soil temp (4") 56°F
Watering Low
Pest pressure Low
Daylight 14.4 hrs
  1. Transplant lettuce outside

    Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.

Looking ahead to June
  • Starting indoors: lettuce
  • First harvests: lettuce

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Lettuce is a fast-growing cool-season green available in leaf, romaine, butterhead, and crisphead types. It is the foundation of salads and one of the easiest crops to grow.

Scotts Bluff County, Nebraska is in USDA Zone 5a. The average last spring frost is May 13 and the first fall frost is September 25, giving you a growing season of approximately 135 days.

At an elevation of 1,080 feet, Scotts Bluff County receives approximately 32.2 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Lettuce to ensure they mature before fall.

Scotts Bluff County, NE (Zone 5a) Short season
135 days
Last Spring Frost May 13
135 growing days
First Fall Frost September 25

Scotts Bluff County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (26 days to spare)
Start indoors: Apr 3 Transplant: May 8 🍅 Harvest: Jun 12 – Aug 21
Recommended (50%) ✓ Fits season (30 days to spare)
Start indoors: Apr 8 Transplant: May 13 🍅 Harvest: Jun 17 – Aug 26
Safe Start (90%) ✓ Fits season (18 days to spare)
Start indoors: May 4 Transplant: Jun 8 🍅 Harvest: Jul 13 – Sep 21

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 Scotts Bluff County

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

Soil pH

Your soil pH (6.3–7.5) overlaps with Lettuce's range (6.0–7.0), though not a perfect match.

Soil Texture

The loam soil in Scotts Bluff County is excellent for Lettuce — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Lettuce.

Organic Matter

Organic matter is moderate (3.6%). Annual compost additions will help Lettuce.

How to Plant Lettuce

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

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

Succession Planting Lettuce

5
successive plantings in your 135-day season

Sow every 3.4 weeks. Last sowing by Jul 27 to harvest before frost.

For a dedicated fall crop, sow by Jul 17.

Plant Water Budget

Plant needs
0.7″/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 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Lettuce

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

Month Lettuce Needs Rainfall You Supplement Action
Jan 2.1" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 2.6" 0" ❄️ Dormant
Apr 3" 0" ❄️ Dormant
May 3" 4.1" 0" ✅ Rainfall sufficient
Jun 3" 2.2" 0.8" 💧 Light watering
Jul 3" 3.3" 0" ✅ Rainfall sufficient
Aug 3" 3.9" 0" ✅ Rainfall sufficient
Sep 3" 2.6" 0.4" 💧 Light watering
Oct 2.9" 0" ❄️ Dormant
Nov 2" 0" ❄️ Dormant
Dec 1.7" 0" ❄️ Dormant

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

Lettuce 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.

Lettuce needs ~551 GDD — county provides 1,653 GDD Excellent fit

Lettuce Planting Timeline — Scotts Bluff County, NE

Lettuce Planting Calendar

Activity When Date Range
Start Indoors April 8 Apr 8 – Apr 22
Transplant Outdoors May 13 May 13 – May 27
Direct Sow April 29 Apr 29 – May 20
Harvest June 17 Jun 17 – Aug 26
Fall Sowing July 17 Jul 17 – Jul 31

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

30–60 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5a

📆 Growing Season

135 days in Scotts Bluff County

Growing Tips for Lettuce in Scotts Bluff County

Direct sow Lettuce outdoors after May 13 in Scotts Bluff County when soil has warmed and frost danger has passed.

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

General growing tips

Sow seeds directly every 2 weeks for continuous harvest. Provide afternoon shade in warm weather to delay bolting. Harvest in the morning for crispest leaves.

Companion Planting

Good Companions

Avoid Planting Near

  • Celery

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Lettuce Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Let plants bolt and flower. Harvest seed heads when fluffy.
Storage Store airtight; viable 6 years at 35°F, under 45% humidity.

Very easy to save. Let a few plants bolt each season.

Frequently Asked Questions

When should I plant Lettuce in Scotts Bluff County, NE?

Scotts Bluff County is in Zone 5a with an average last frost of May 13. Plan your Lettuce planting based on this frost date — see the calendar above for exact timing.

What planting zone is Scotts Bluff County, NE?

Scotts Bluff County, Nebraska is in USDA Hardiness Zone 5a. The average last spring frost is May 13 and first fall frost is September 25.

🌱

Your Scotts Bluff County Garden Planner — Free

A 24-page printable planner built for Scotts Bluff County (Zone 5a). 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 Scotts Bluff County, NE. 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.