When to Plant Columbine in South Acworth, New Hampshire (03607)

Location

South Acworth, New Hampshire

ZIP Code

03607

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Saturday, February 28, 2026

Transplant Outdoors

Saturday, May 9, 2026

Based on last frost Saturday, April 25, 2026 · Zone 5b

Pro tip: Start Columbine seeds indoors 8 weeks before your last frost date, then transplant outdoors around Saturday, May 9, 2026.

Add to Calendar (.ics)

🌿 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 South Acworth?

Get your seeds now so they're ready by Saturday, February 28, 2026.

🛒 Buy on Amazon 🌿 True Leaf Market

* Affiliate links — we may earn a small commission at no extra cost to you.

🤝 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

* Affiliate links — we may earn a small commission at no extra cost to you.

🌾 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 South Acworth, New Hampshire? +

In South Acworth (Zone 5b), start Columbine seeds indoors around Saturday, February 28, 2026 and transplant outdoors around Saturday, May 9, 2026.

What is the last frost date for South Acworth, New Hampshire? +

The average last spring frost date for South Acworth, New Hampshire (ZIP 03607) is around Saturday, April 25, 2026. This is based on NOAA climate normals for USDA Zone 5b.

How long does Columbine take to grow? +

Columbine typically matures in about 365 days from transplanting. In South Acworth, that means you can expect harvest around Saturday, May 9, 2026 plus 365 days.

Should I start Columbine indoors or direct sow in New Hampshire? +

Columbine should be started indoors 8 weeks before your last frost date. In South Acworth, that means starting around Saturday, February 28, 2026.

📚 More Columbine Planting Guides

🗺️

Columbine in New Hampshire

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 5b Columbine Guide

All cities in your zone · Avg dates

→

Other Plants for South Acworth

Blackberry Blueberry Raspberry Strawberry Basil Chamomile Chives Cilantro Dill Lavender Lemon Balm Marjoram Mint Oregano Parsley Rosemary Sage Tarragon Thyme Acorn Squash Artichoke Arugula Asparagus Beefsteak Tomato Beet Bell Pepper Bok Choy Broccoli Brussels Sprout Butternut Squash Cabbage Cantaloupe Carrot Cauliflower Cayenne Pepper Celery Cherry Tomato Chili Pepper Collard Green Common Bean Cucumber Eggplant Endive Fennel Garlic Grape Tomato Green Bean Habanero Pepper Head Lettuce Heirloom Tomato Honeydew Melon Jalapeño Pepper Kale Kohlrabi Leaf Lettuce Leek Lima Bean Mustard Okra Onion Parsnip Pea Poblano Pepper Pole Pea Potato Pumpkin Radicchio Radish Rhubarb Roma Tomato Rutabaga Serrano Pepper Shallot Snap Pea Snow Pea Spaghetti Squash Spinach Squash Sweet Corn Sweet Potato Swiss Chard Tomato Turnip Watermelon Zucchini Sunflower Marigold Zinnia Nasturtium Cosmos Echinacea (Coneflower) Petunia Black-eyed Susan Apple Tree Pear Tree Peach Tree Plum Tree Sweet Cherry Tree Lemon Tree Borage Lemongrass Ginger Stevia Tomatillo Edamame Fava Bean Mâche Mizuna Sorrel Shishito Pepper Banana Pepper Watermelon Radish Napa Cabbage Popcorn Broccoli Raab Catnip Valerian Lemon Verbena Bee Balm Anise Lovage Chervil Summer Savory Dahlia Snapdragon Pansy Sweet Pea Morning Glory Hollyhock Larkspur Bachelor Button Impatiens Salvia (Annual) Sweet Alyssum Celosia Lupine Verbena Elderberry Grape Vine Red Currant Gooseberry Serviceberry Fig Tree Avocado Tree Persimmon Tree Olive Tree

Growing Columbine in Zone 5b

Columbine (Aquilegia vulgaris) is a popular garden vegetable. In South Acworth, New Hampshire, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, February 28, 2026.

Your average last frost date is Saturday, April 25, 2026. Plan to transplant your Columbine seedlings outdoors around Saturday, May 9, 2026, about 2 weeks after your last frost date.