When to Plant Parsnip in Whittier, California (90607)

Location

Whittier, California

ZIP Code

90607

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Thursday, November 20, 2025

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

Pro tip: Sow Parsnip directly outdoors 8 weeks before your last frost date.

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🌿 Plant Details

Scientific Name Pastinaca sativa

Days to Maturity 100 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 8-21 days

Ready to Plant Parsnip in Whittier?

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

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🤝 Good Companions

Fruit Trees

🤝

Full Companion Planting Guide for Parsnip

See which plants help Parsnip 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

🔴 Difficult

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Biennial — leave roots in ground over winter and harvest seed umbels in year 2 when tan and dry.

Processing

Cut seed umbels into a bag, thresh and winnow to separate seeds. Sow fresh for best results.

Seed Viability

Up to 1 year when stored cool, dark, and dry.

Pro Tip

Parsnip seed viability drops sharply after 1 year — always sow from the previous summer's harvest.

Frequently Asked Questions

When should I plant Parsnip in Whittier, California? +

In Whittier (Zone 10b), direct sow Parsnip outdoors around Thursday, November 20, 2025.

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 Parsnip take to grow? +

Parsnip typically matures in about 100 days from direct sowing. In Whittier, that means you can expect harvest around Thursday, November 20, 2025 plus 100 days.

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

Parsnip does best when direct sown outdoors. In Whittier, sow directly around Thursday, November 20, 2025.

📚 More Parsnip Planting Guides

🗺️

Parsnip in California

Zone-by-zone breakdown · Full state guide

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Zone 10b Parsnip Guide

All cities in your zone · Avg dates

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Growing Parsnip in Zone 10b

Parsnip (Pastinaca sativa) is a popular garden vegetable. In Whittier, California, which is in USDA Hardiness Zone 10b, you should direct sow seeds around Thursday, November 20, 2025.

Your average last frost date is Thursday, January 15, 2026. Parsnip grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.