When to Plant Columbine 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 Columbine 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 Aquilegia vulgaris

Days to Maturity 365 days

Mature Height 18-36"

Spread 18"

☀️ Growing Requirements

☀️

Sun

Partial Shade to Full Sun

💧

Water

Moderate (1 inch/week)

↔️

Spacing

12" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 21-30 days

Ready to Plant Columbine in Whittier?

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

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🤝 Good Companions

FernHostasSpring Bulbs

🤝

Full Companion Planting Guide for Columbine

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

🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🌍 Flower Garden Soil ✂️ Pruning Shears 🚿 Watering Can

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🌾 Seed Saving Guide

🟢 Easy

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Allow seed pods (follicles) to dry and turn brown on the plant. Harvest before they split.

Processing

Crack dry pods over a bowl to release tiny black seeds. Dry 1 week before storing.

Seed Viability

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

Pro Tip

Columbines cross freely between varieties and species — saved seeds often produce beautiful new color combinations.

🪴

Raised Bed Planting Guides

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

Frequently Asked Questions

When should I plant Columbine in Whittier, California? +

In Whittier (Zone 10b), start Columbine 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 Columbine take to grow? +

Columbine typically matures in about 365 days from transplanting. In Whittier, that means you can expect harvest around Thursday, January 29, 2026 plus 365 days.

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

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

📚 More Columbine Planting Guides

🗺️

Columbine in California

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 10b Columbine Guide

All cities in your zone · Avg dates

→

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Growing Columbine in Zone 10b

Columbine (Aquilegia vulgaris) 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 Columbine seedlings outdoors around Thursday, January 29, 2026, about 2 weeks after your last frost date.