When to Plant Verbena in Duchesne, Utah (84021)

Location

Duchesne, Utah

ZIP Code

84021

USDA Zone

Last Frost

Monday, April 20, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Monday, February 23, 2026

Transplant Outdoors

Monday, May 4, 2026

Based on last frost Monday, April 20, 2026 · Zone 6a

Pro tip: Start Verbena seeds indoors 8 weeks before your last frost date, then transplant outdoors around Monday, May 4, 2026.

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🌿 Plant Details

Scientific Name Verbena hybrida

Days to Maturity 85 days

Mature Height 6-18"

Spread 18"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

12" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 14-21 days

Ready to Plant Verbena in Duchesne?

Get your seeds now so they're ready by Monday, February 23, 2026.

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🤝 Good Companions

MarigoldPetuniaSalvia

🤝

Full Companion Planting Guide for Verbena

See which plants help Verbena thrive, which to keep away, and raised bed layout tips →

🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🌍 Flower Garden Soil ✂️ Pruning Shears 🚿 Watering Can

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🌾 Seed Saving Guide

🟡 Moderate

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

When to Harvest Seed

Allow flower clusters to dry on the plant. Collect dry seed clusters.

Processing

Break apart dry clusters to release seeds, dry 1 week in open envelope.

Seed Viability

Up to 2 years when stored cool, dark, and dry.

Pro Tip

Most garden verbenas are F1 hybrids. Verbena bonariensis is a good open-pollinated alternative that grows true from seed.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 32 plants of Verbena. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Verbena in Duchesne, Utah? +

In Duchesne (Zone 6a), start Verbena seeds indoors around Monday, February 23, 2026 and transplant outdoors around Monday, May 4, 2026.

What is the last frost date for Duchesne, Utah? +

The average last spring frost date for Duchesne, Utah (ZIP 84021) is around Monday, April 20, 2026. This is based on NOAA climate normals for USDA Zone 6a.

How long does Verbena take to grow? +

Verbena typically matures in about 85 days from transplanting. In Duchesne, that means you can expect harvest around Monday, May 4, 2026 plus 85 days.

Should I start Verbena indoors or direct sow in Utah? +

Verbena should be started indoors 8 weeks before your last frost date. In Duchesne, that means starting around Monday, February 23, 2026.

📚 More Verbena Planting Guides

🗺️

Verbena in Utah

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 6a Verbena Guide

All cities in your zone · Avg dates

→

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Growing Verbena in Zone 6a

Verbena (Verbena hybrida) is a popular garden vegetable. In Duchesne, Utah, which is in USDA Hardiness Zone 6a, you should start seeds indoors around Monday, February 23, 2026.

Your average last frost date is Monday, April 20, 2026. Plan to transplant your Verbena seedlings outdoors around Monday, May 4, 2026, about 2 weeks after your last frost date.