When to Plant Catnip in Manheim, Pennsylvania (17545)

Location

Manheim, Pennsylvania

ZIP Code

17545

USDA Zone

Last Frost

Friday, April 10, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Friday, February 13, 2026

Transplant Outdoors

Friday, April 24, 2026

Based on last frost Friday, April 10, 2026 · Zone 7a

Pro tip: Start Catnip seeds indoors 8 weeks before your last frost date, then transplant outdoors around Friday, April 24, 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 Manheim?

Get your seeds now so they're ready by Friday, February 13, 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 Manheim, Pennsylvania? +

In Manheim (Zone 7a), start Catnip seeds indoors around Friday, February 13, 2026 and transplant outdoors around Friday, April 24, 2026.

What is the last frost date for Manheim, Pennsylvania? +

The average last spring frost date for Manheim, Pennsylvania (ZIP 17545) is around Friday, April 10, 2026. This is based on NOAA climate normals for USDA Zone 7a.

How long does Catnip take to grow? +

Catnip typically matures in about 90 days from transplanting. In Manheim, that means you can expect harvest around Friday, April 24, 2026 plus 90 days.

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

Catnip should be started indoors 8 weeks before your last frost date. In Manheim, that means starting around Friday, February 13, 2026.

📚 More Catnip Planting Guides

🗺️

Catnip in Pennsylvania

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 7a Catnip Guide

All cities in your zone · Avg dates

→

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Growing Catnip in Zone 7a

Catnip (Nepeta cataria) is a popular garden vegetable. In Manheim, Pennsylvania, which is in USDA Hardiness Zone 7a, you should start seeds indoors around Friday, February 13, 2026.

Your average last frost date is Friday, April 10, 2026. Plan to transplant your Catnip seedlings outdoors around Friday, April 24, 2026, about 2 weeks after your last frost date.