When to Plant Catnip in Colorado Springs, Colorado (80902)

Location

Colorado Springs, Colorado

ZIP Code

80902

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 Catnip 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 Nepeta cataria

Days to Maturity 90 days

Mature Height 18-36"

Spread 18"

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Low (less than 1 inch/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 7-14 days

Ready to Plant Catnip in Colorado Springs?

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

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🤝 Good Companions

TomatoPepperSquashPumpkin

🤝

Full Companion Planting Guide for Catnip

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

🛠️ 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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🌾 Seed Saving Guide

🟢 Easy

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Let flower spikes dry completely on the plant. Seeds form in small nutlets inside dried calyxes.

Processing

Strip dried stems over a bowl, rub between fingers to release seeds, winnow lightly.

Seed Viability

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

Pro Tip

Catnip self-sows freely and can become weedy — deadhead most plants to control spread.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 14 plants of Catnip. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Catnip in Colorado Springs, Colorado? +

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

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

The average last spring frost date for Colorado Springs, Colorado (ZIP 80902) is around Monday, April 20, 2026. This is based on NOAA climate normals for USDA Zone 6a.

How long does Catnip take to grow? +

Catnip typically matures in about 90 days from transplanting. In Colorado Springs, that means you can expect harvest around Monday, May 4, 2026 plus 90 days.

Should I start Catnip indoors or direct sow in Colorado? +

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

📚 More Catnip Planting Guides

🗺️

Catnip in Colorado

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 6a Catnip Guide

All cities in your zone · Avg dates

→

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Growing Catnip in Zone 6a

Catnip (Nepeta cataria) is a popular garden vegetable. In Colorado Springs, Colorado, 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 Catnip seedlings outdoors around Monday, May 4, 2026, about 2 weeks after your last frost date.