When to Plant Lupine in Evansville, Indiana (47708)

Location

Evansville, Indiana

ZIP Code

47708

USDA Zone

Last Frost

Friday, April 10, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Friday, March 13, 2026

Based on last frost Friday, April 10, 2026 · Zone 7a

Pro tip: Sow Lupine directly outdoors 4 weeks before your last frost date.

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🌿 Plant Details

Scientific Name Lupinus polyphyllus

Days to Maturity 365 days

Mature Height 24-48"

Spread 24"

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Moderate (1 inch/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 14-21 days

Ready to Plant Lupine in Evansville?

Get your seeds now so they're ready by Friday, March 13, 2026.

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🤝 Good Companions

CarrotBrassicasCorn

⚠️ Avoid Planting Near

Fennel

🤝

Full Companion Planting Guide for Lupine

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

🛠️ Supplies You'll Need

🌍 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 to dry on the plant — pods will turn black and begin to twist when fully ripe.

Processing

Collect before pods explode and fling seeds. Shell pods, dry seeds 1 week.

Seed Viability

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

Pro Tip

Lupine seeds have a hard coat — nick with sandpaper or soak 24 hours before sowing to improve germination.

🪴

Raised Bed Planting Guides

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

Frequently Asked Questions

When should I plant Lupine in Evansville, Indiana? +

In Evansville (Zone 7a), direct sow Lupine outdoors around Friday, March 13, 2026.

What is the last frost date for Evansville, Indiana? +

The average last spring frost date for Evansville, Indiana (ZIP 47708) is around Friday, April 10, 2026. This is based on NOAA climate normals for USDA Zone 7a.

How long does Lupine take to grow? +

Lupine typically matures in about 365 days from direct sowing. In Evansville, that means you can expect harvest around Friday, March 13, 2026 plus 365 days.

Should I start Lupine indoors or direct sow in Indiana? +

Lupine does best when direct sown outdoors. In Evansville, sow directly around Friday, March 13, 2026.

📚 More Lupine Planting Guides

🗺️

Lupine in Indiana

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 7a Lupine Guide

All cities in your zone · Avg dates

→

Other Plants for Evansville

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Growing Lupine in Zone 7a

Lupine (Lupinus polyphyllus) is a popular garden vegetable. In Evansville, Indiana, which is in USDA Hardiness Zone 7a, you should direct sow seeds around Friday, March 13, 2026.

Your average last frost date is Friday, April 10, 2026. Lupine grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.