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When to Plant Beefsteak Tomato in Agate, North Dakota (58310)

Location

Agate, North Dakota

ZIP Code

58310

USDA Zone

3b

Last Frost

Wednesday, May 20, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Wednesday, April 8, 2026

Transplant Outdoors

Wednesday, June 3, 2026

Based on last frost Wednesday, May 20, 2026 · Zone 3b

Pro tip: Start Beefsteak Tomato seeds indoors 6 weeks before your last frost date, then transplant outdoors around Wednesday, June 3, 2026.

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🌿 Plant Details

Scientific Name Solanum lycopersicum
Days to Maturity 85 days
Mature Height 60-96"
Spread 36"
Type Indeterminate
Fruit Size Large (10-16 oz)

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

36" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 7-14 days

Ready to Plant Beefsteak Tomato in Agate?

Get your seeds now so they're ready by Wednesday, April 8, 2026.

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🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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Common Beefsteak Tomato Varieties

Popular cultivars to look for at your local nursery or seed supplier.

Mortgage Lifter

heirloom 85d

Legendary heirloom bred by "Radiator Charlie" — up to 2.5 lb fruits with mild, rich flavor.

Big Beef

hybrid 73d

Classic hybrid beefsteak with reliable yields and resistance to common tomato diseases.

Supersteak

hybrid 80d

Uniform 2-pound hybrid fruits with meaty flesh and excellent shelf life.

Dinner Plate

heirloom 85d

Enormous heirloom fruits often exceeding 2 lbs; classic old-fashioned tomato flavor.

🌾 Seed Saving Guide

🟢 Easy
⚠️ Many varieties are F1 hybrid — look for OP/heirloom types

When to Harvest Seed

Let fruit ripen fully — slightly overripe is ideal. Use only heirloom beefsteak varieties for reliable seed.

Processing

Ferment seeds in their gel for 2–3 days, rinse, dry flat on a screen for 1 week.

Seed Viability

Up to 4 years when stored cool, dark, and dry.

Pro Tip

Most commercial beefsteak tomatoes are F1 hybrids. Try open-pollinated varieties like Brandywine or Cherokee Purple.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 3 plants of Beefsteak Tomato. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Beefsteak Tomato in Agate, North Dakota? +

In Agate (Zone 3b), start Beefsteak Tomato seeds indoors around Wednesday, April 8, 2026 and transplant outdoors around Wednesday, June 3, 2026.

What is the last frost date for Agate, North Dakota? +

The average last spring frost date for Agate, North Dakota (ZIP 58310) is around Wednesday, May 20, 2026. This is based on NOAA climate normals for USDA Zone 3b.

How long does Beefsteak Tomato take to grow? +

Beefsteak Tomato typically matures in about 85 days from transplanting. In Agate, that means you can expect harvest around Wednesday, June 3, 2026 plus 85 days.

Should I start Beefsteak Tomato indoors or direct sow in North Dakota? +

Beefsteak Tomato should be started indoors 6 weeks before your last frost date. In Agate, that means starting around Wednesday, April 8, 2026.

📚 More Beefsteak Tomato Planting Guides

🗺️

Beefsteak Tomato in North Dakota

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 3b Beefsteak Tomato Guide

All cities in your zone · Avg dates

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Growing Beefsteak Tomato in Zone 3b

Beefsteak Tomato (Solanum lycopersicum) is a popular garden vegetable. In Agate, North Dakota, which is in USDA Hardiness Zone 3b, you should start seeds indoors around Wednesday, April 8, 2026.

Your average last frost date is Wednesday, May 20, 2026. Plan to transplant your Beefsteak Tomato seedlings outdoors around Wednesday, June 3, 2026, about 2 weeks after your last frost date.