Blog

When to Plant Tomatillo in Sherman County, NE

Sherman County, Nebraska Zone 5b June

Sherman County, Nebraska gardeners: here's your June plan

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

Avg. last frost May 9
Avg. first frost October 5
Soil temp (4") 65°F
Watering Low
Pest pressure High
Daylight 15 hrs
Looking ahead to July
  • Starting indoors: tomatillo
  • First harvests: tomatillo

Instant PDF download. No spam, unsubscribe any time.

Tomatillos are a Mexican staple that produces tart, green fruits enclosed in papery husks. They are essential for salsa verde and green sauces.

Sherman County, Nebraska is in USDA Zone 5b. The average last spring frost is May 9 and the first fall frost is October 5, giving you a growing season of approximately 149 days.

At an elevation of 807 feet, Sherman County receives approximately 33.6 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Tomatillo to ensure they mature before fall.

Sherman County, NE (Zone 5b) Short season
149 days
Last Spring Frost May 9
149 growing days
First Fall Frost October 5

Sherman County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.5

Drainage

Well Drained

Tomatillo Planting Risk Windows

Early Start (70% safe) ✓ Fits season (6 days to spare)
Start indoors: Mar 3 Transplant: May 12 🍅 Harvest: Jul 14 – Sep 22
Recommended (50%) ✓ Fits season (2 days to spare)
Start indoors: Mar 14 Transplant: May 23 🍅 Harvest: Jul 25 – Oct 3
Safe Start (90%) ✓ Fits season (3 days to spare)
Start indoors: Mar 22 Transplant: May 31 🍅 Harvest: Aug 2 – Oct 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 Sherman County

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

Soil pH

Your soil pH (6.5–7.5) overlaps with Tomatillo's range (6.0–7.0), though not a perfect match.

Soil Texture

The loam soil in Sherman County is excellent for Tomatillo — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.7%). Annual compost additions will help Tomatillo.

How to Plant Tomatillo

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Tomatillo

2
successive plantings in your 149-day season

Sow every 6.9 weeks. Last sowing by Jul 12 to harvest before frost.

Tomatillo Water Budget

Plant needs
1.1″/week
Rainfall provides
1.0″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 243 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Tomatillo

Tomatillo needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.

Month Tomatillo Needs Rainfall You Supplement Action
Jan 0.8" 0" ❄️ Dormant
Feb 1.2" 0" ❄️ Dormant
Mar 2.4" 0" ❄️ Dormant
Apr 3.5" 0" ❄️ Dormant
May 4.8" 5.4" 0" ✅ Rainfall sufficient
Jun 4.8" 5.3" 0" ✅ Rainfall sufficient
Jul 4.8" 3.7" 1.1" 💧 Light watering
Aug 4.8" 4.1" 0.7" 💧 Light watering
Sep 4.8" 3.2" 1.6" 💧 Light watering
Oct 4.8" 2.2" 2.6" 🚿 Regular watering
Nov 1.1" 0" ❄️ Dormant
Dec 0.7" 0" ❄️ Dormant

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

Tomatillo 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.

Tomatillo needs ~725 GDD — county provides 1,490 GDD Excellent fit

Tomatillo Planting Timeline — Sherman County, NE

Tomatillo Planting Calendar

Activity When Date Range
Start Indoors March 14 Mar 14 – Mar 28
Transplant Outdoors May 23 May 23 – Jun 6
Direct Sow May 16 May 16 – Jun 6
Harvest July 25 Jul 25 – Oct 3

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · Only during dry spells

📅 Days to Maturity

60–85 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5b

📆 Growing Season

149 days in Sherman County

Growing Tips for Tomatillo in Sherman County

Direct sow Tomatillo outdoors after May 09 in Sherman County when soil has warmed and frost danger has passed.

Common pests for Tomatillo in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Plant at least two plants for cross-pollination. Harvest when fruits fill the husk and it begins to split.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel
  • Dill

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Tomatillo in Sherman County, NE?

Sherman County is in Zone 5b with an average last frost of May 9. Plan your Tomatillo planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sherman County, NE?

Sherman County, Nebraska is in USDA Hardiness Zone 5b. The average last spring frost is May 9 and first fall frost is October 5.

🌱

Your Sherman County Garden Planner — Free

A 22-page printable planner built for Sherman County (Zone 5b). 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 Sherman County, NE. 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.