When to Plant Lemon Balm in Mc Clure, Pennsylvania (17841)

Location

Mc Clure, Pennsylvania

ZIP Code

17841

USDA Zone

Last Frost

Wednesday, April 15, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Wednesday, March 4, 2026

Transplant Outdoors

Wednesday, April 29, 2026

Based on last frost Wednesday, April 15, 2026 · Zone 6b

Pro tip: Start Lemon Balm seeds indoors 6 weeks before your last frost date, then transplant outdoors around Wednesday, April 29, 2026.

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🌿 Plant Details

Scientific Name Melissa officinalis

Days to Maturity 70 days

Mature Height 18-36"

Spread 24"

Type Spreading

Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Partial Shade to Full Sun

💧

Water

Regular (keep moist)

↔️

Spacing

18" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 10-14 days

Ready to Plant Lemon Balm in Mc Clure?

Get your seeds now so they're ready by Wednesday, March 4, 2026.

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🤝 Good Companions

TomatoSquashBeanPepper

🤝

Full Companion Planting Guide for Lemon Balm

See which plants help Lemon Balm 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

Harvest seed heads when most have turned brown — they shatter quickly so check often.

Processing

Shake dried stems into a container; tiny seeds fall freely from dried calyxes.

Seed Viability

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

Pro Tip

Lemon balm self-sows vigorously and can become invasive if all seeds are allowed to drop.

🪴

Raised Bed Planting Guides

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

Frequently Asked Questions

When should I plant Lemon Balm in Mc Clure, Pennsylvania? +

In Mc Clure (Zone 6b), start Lemon Balm seeds indoors around Wednesday, March 4, 2026 and transplant outdoors around Wednesday, April 29, 2026.

What is the last frost date for Mc Clure, Pennsylvania? +

The average last spring frost date for Mc Clure, Pennsylvania (ZIP 17841) is around Wednesday, April 15, 2026. This is based on NOAA climate normals for USDA Zone 6b.

How long does Lemon Balm take to grow? +

Lemon Balm typically matures in about 70 days from transplanting. In Mc Clure, that means you can expect harvest around Wednesday, April 29, 2026 plus 70 days.

Should I start Lemon Balm indoors or direct sow in Pennsylvania? +

Lemon Balm should be started indoors 6 weeks before your last frost date. In Mc Clure, that means starting around Wednesday, March 4, 2026.

📚 More Lemon Balm Planting Guides

🗺️

Lemon Balm in Pennsylvania

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 6b Lemon Balm Guide

All cities in your zone · Avg dates

→

Other Plants for Mc Clure

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Growing Lemon Balm in Zone 6b

Lemon Balm (Melissa officinalis) is a popular garden vegetable. In Mc Clure, Pennsylvania, which is in USDA Hardiness Zone 6b, you should start seeds indoors around Wednesday, March 4, 2026.

Your average last frost date is Wednesday, April 15, 2026. Plan to transplant your Lemon Balm seedlings outdoors around Wednesday, April 29, 2026, about 2 weeks after your last frost date.