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When to plant Tomatoes in Shingleton,

Aim to plant Tomatoes in Shingleton on or after May 17; the window stays open through June 7. Shingleton's 159-day frost-free season gives you a single solid spring crop with a brief fall option.

When to Plant Tomatoes in Shingleton, MI

Tomatoes
Shingleton, MI Zone 5a June

June in Shingleton, MI — your action list

Your Shingleton, MI 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 10
Avg. first frost October 16
Soil temp (4") 64°F
Watering Low
Pest pressure High
Daylight 15.6 hrs
To set up a strong July, finish these tasks
  • Starting indoors: tomatoes
  • First harvests: tomatoes

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Tomatoes are the most popular home garden crop, available in thousands of varieties from tiny cherries to massive beefsteaks. They are warm-season plants needing full sun.

Shingleton, Michigan is in USDA Zone 5a. The average last spring frost is May 10 and the first fall frost is October 16, giving you a growing season of approximately 159 days.

At an elevation of 1,014 feet, Alger County receives approximately 40.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Tomatoes to ensure they mature before fall.

Shingleton, MI (Zone 5a) Moderate season
159 days
Last Spring Frost May 10
159 growing days
First Fall Frost October 16

Shingleton Soil Profile

Soil Type

Silt Loam

Soil pH

6.3-7.1

Drainage

Well Drained

Tomatoes Planting Risk Windows

Early Start (70% safe) ✓ Fits season (12 days to spare)
Start indoors: Mar 7 Transplant: May 16 🍅 Harvest: Jul 18 – Sep 26
Recommended (50%) ✓ Fits season (12 days to spare)
Start indoors: Mar 15 Transplant: May 24 🍅 Harvest: Jul 26 – Oct 4
Safe Start (90%) ✓ Fits season (14 days to spare)
Start indoors: Mar 30 Transplant: Jun 8 🍅 Harvest: Aug 10 – Oct 19

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 Shingleton

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

Soil pH

Your soil pH (6.3–7.1) overlaps with Tomatoes's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Tomatoes.

Organic Matter

Organic matter is excellent (4.8%) — Tomatoes will thrive.

How to Plant Tomatoes

0.5"
Planting Depth
24"
Between Plants
36"
Between Rows

Succession Planting Tomatoes

3
successive plantings in your 159-day season

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

Tomatoes Water Budget

Plant needs
1.2″/week
Rainfall provides
1.1″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 679 gal / 100 sq ft

Monthly Watering Guide for Tomatoes

Tomatoes needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.

Month Tomatoes Needs Rainfall You Supplement Action
Jan 2" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 2.5" 0" ❄️ Dormant
Apr 3.5" 0" ❄️ Dormant
May 5.2" 4.3" 0.9" 💧 Light watering
Jun 5.2" 5" 0.2" 💧 Light watering
Jul 5.2" 5" 0.2" 💧 Light watering
Aug 5.2" 4.7" 0.5" 💧 Light watering
Sep 5.2" 3.9" 1.3" 💧 Light watering
Oct 5.2" 3" 2.2" 💧 Light watering
Nov 2.9" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

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

Tomatoes 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.

Tomatoes needs ~725 GDD — county provides 1,590 GDD Excellent fit

Tomatoes Planting Timeline — Shingleton, MI

Tomatoes Planting Calendar

Activity When Date Range
Start Indoors March 15 Mar 15 – Mar 29
Transplant Outdoors May 24 May 24 – Jun 7
Direct Sow May 17 May 17 – Jun 7
Harvest July 26 Jul 26 – Oct 4

Plant 0.5" deep · 24" apart · Rows 36" 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

1.2"/week · 1-2 times/week

📅 Days to Maturity

60–85 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5a

📆 Growing Season

159 days in Alger County

Growing Tips for Tomatoes in Shingleton

Direct sow Tomatoes outdoors after May 10 in Alger County when soil has warmed and frost danger has passed.

Common pests for Tomatoes 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. Bury transplants deep to encourage rooting along the stem. Provide consistent moisture to prevent blossom end rot and cracking.

Companion Planting

Good Companions

Avoid Planting Near

  • Cabbage
  • Fennel
  • Potatoes

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Tomatoes Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Scoop seeds from ripe fruit; ferment 2-3 days to remove gel coating.
Storage Store airtight; viable 4-6 years at 35°F, under 45% humidity.

Isolate 25 ft between varieties for purity. Use open-pollinated varieties for true-to-type seeds.

When should I plant Tomatoes in Shingleton, ?

In Shingleton, , plant Tomatoes after the last frost (around May 10) and before the first frost (around October 16). Best results when soil holds above 50°F.

What growing zone is Shingleton, for Tomatoes?

Shingleton sits in USDA Zone 5a. Tomatoes grows reliably in zones 3a through 11b, so it's a good fit here.

Can Tomatoes grow in Shingleton's climate?

Yes — Tomatoes grows well in Shingleton's temperate climate. Shingleton averages a 159-day frost-free season, with last frost around May 10 and first frost around October 16.

🌱

Your Alger County Garden Planner — Free

A 22-page printable planner built for Alger 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.

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 Alger County, MI. Local conditions may vary. Last updated: June 2026.