When to Plant Marjoram in Whittier, California (90607)

Location

Whittier, California

ZIP Code

90607

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Thursday, November 20, 2025

Transplant Outdoors

Thursday, January 29, 2026

Based on last frost Thursday, January 15, 2026 · Zone 10b

Pro tip: Start Marjoram seeds indoors 8 weeks before your last frost date, then transplant outdoors around Thursday, January 29, 2026.

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🌿 Plant Details

Scientific Name Origanum majorana

Days to Maturity 60 days

Mature Height 12-24"

Spread 18"

Type Spreading

Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Full Sun (6+ hours)

💧

Water

Low to Moderate

↔️

Spacing

12" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 7-14 days

Ready to Plant Marjoram in Whittier?

Get your seeds now so they're ready by Thursday, November 20, 2025.

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🤝 Good Companions

PepperTomatoBasilBean

🤝

Full Companion Planting Guide for Marjoram

See which plants help Marjoram 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

Allow flower clusters to dry completely on the plant before harvesting.

Processing

Strip dried flower clusters, crush gently to release tiny seeds, winnow lightly.

Seed Viability

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

Pro Tip

Marjoram seeds are very small — surface sow without covering when planting.

🪴

Raised Bed Planting Guides

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

Frequently Asked Questions

When should I plant Marjoram in Whittier, California? +

In Whittier (Zone 10b), start Marjoram seeds indoors around Thursday, November 20, 2025 and transplant outdoors around Thursday, January 29, 2026.

What is the last frost date for Whittier, California? +

The average last spring frost date for Whittier, California (ZIP 90607) is around Thursday, January 15, 2026. This is based on NOAA climate normals for USDA Zone 10b.

How long does Marjoram take to grow? +

Marjoram typically matures in about 60 days from transplanting. In Whittier, that means you can expect harvest around Thursday, January 29, 2026 plus 60 days.

Should I start Marjoram indoors or direct sow in California? +

Marjoram should be started indoors 8 weeks before your last frost date. In Whittier, that means starting around Thursday, November 20, 2025.

📚 More Marjoram Planting Guides

🗺️

Marjoram in California

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 10b Marjoram Guide

All cities in your zone · Avg dates

→

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Growing Marjoram in Zone 10b

Marjoram (Origanum majorana) is a popular garden vegetable. In Whittier, California, which is in USDA Hardiness Zone 10b, you should start seeds indoors around Thursday, November 20, 2025.

Your average last frost date is Thursday, January 15, 2026. Plan to transplant your Marjoram seedlings outdoors around Thursday, January 29, 2026, about 2 weeks after your last frost date.