When to Plant Summer Savory in Boulder, Colorado (80310)

Location

Boulder, Colorado

ZIP Code

80310

USDA Zone

Last Frost

Monday, April 20, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Monday, April 6, 2026

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

Pro tip: Sow Summer Savory directly outdoors 2 weeks before your last frost date.

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🌿 Plant Details

Scientific Name Satureja hortensis

Days to Maturity 60 days

Mature Height 12-18"

Spread 12"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Low to Moderate

↔️

Spacing

12" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 10-14 days

Ready to Plant Summer Savory in Boulder?

Get your seeds now so they're ready by Monday, April 6, 2026.

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🤝 Good Companions

BeanOnionGarlicRosemary

⚠️ Avoid Planting Near

Fennel

🤝

Full Companion Planting Guide for Summer Savory

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

🛠️ Supplies You'll Need

🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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🌾 Seed Saving Guide

🟢 Easy

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Let plants fully flower and seed heads dry on the plant. Harvest when brown.

Processing

Strip dried stems over a bowl, rub to release tiny seeds, winnow to remove chaff.

Seed Viability

Up to 3 years when stored cool, dark, and dry.

Pro Tip

Surface sow when planting — seeds need light to germinate.

🪴

Raised Bed Planting Guides

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

Frequently Asked Questions

When should I plant Summer Savory in Boulder, Colorado? +

In Boulder (Zone 6a), direct sow Summer Savory outdoors around Monday, April 6, 2026.

What is the last frost date for Boulder, Colorado? +

The average last spring frost date for Boulder, Colorado (ZIP 80310) is around Monday, April 20, 2026. This is based on NOAA climate normals for USDA Zone 6a.

How long does Summer Savory take to grow? +

Summer Savory typically matures in about 60 days from direct sowing. In Boulder, that means you can expect harvest around Monday, April 6, 2026 plus 60 days.

Should I start Summer Savory indoors or direct sow in Colorado? +

Summer Savory does best when direct sown outdoors. In Boulder, sow directly around Monday, April 6, 2026.

📚 More Summer Savory Planting Guides

🗺️

Summer Savory in Colorado

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 6a Summer Savory Guide

All cities in your zone · Avg dates

→

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Growing Summer Savory in Zone 6a

Summer Savory (Satureja hortensis) is a popular garden vegetable. In Boulder, Colorado, which is in USDA Hardiness Zone 6a, you should direct sow seeds around Monday, April 6, 2026.

Your average last frost date is Monday, April 20, 2026. Summer Savory grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.