How to Grow Lupine
Get Your Exact Lupine Planting Dates
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Your Lupine dates ·
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Supplies You'll Need
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Plant Overview
Growing Requirements
Sun
Full Sun to Partial Shade
Water
Moderate (1 inch/week)
Spacing
18" apart
Depth
0.5" deep
Height
2-4 ft
Germination
14-21 days
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Seed Saving Guide
EasyWhen 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.
Seed Storage Supplies
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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 →
Lupine Planting Calendar by Zone
Lupine Planting Calendar by State
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Frequently Asked Questions
When should I plant Lupine? +
Sow Lupine seeds directly in the garden 4 weeks before your last frost date. Use the search on this page to find exact dates for your location.
How long does Lupine take to grow? +
Lupine typically blooms in about 365 days from planting. Exact timing varies by variety, soil conditions, and local climate.
Should I start Lupine indoors or direct sow? +
Lupine does best when direct sown outdoors. Plant seeds directly in the garden at the appropriate time based on your local frost dates.
How much sun does Lupine need? +
Lupine requires full sun to partial shade to thrive.
How far apart should I plant Lupine? +
Space Lupine plants 18 inches apart to allow adequate airflow and root development.
How much water does Lupine need? +
Lupine has moderate (1 inch/week) water needs. Consistent moisture is important especially during germination and early growth.
Can you save seeds from Lupine? +
Yes — seed saving difficulty for Lupine is rated easy. Allow seed pods to dry on the plant — pods will turn black and begin to twist when fully ripe. Collect before pods explode and fling seeds. Shell pods, dry seeds 1 week.
How long do Lupine seeds last in storage? +
Properly dried and stored Lupine seeds remain viable for up to 3 years. Store in a cool, dark, dry location in an airtight container with a silica gel packet for best results.
Are Lupine seeds open-pollinated? +
Yes — Lupine is open-pollinated, meaning seeds saved from your harvest will grow plants true to the parent variety. This makes it an excellent candidate for building a self-sustaining garden.
About Lupine
Dramatic cottage perennial with tall, colorful flower spikes. Fixes nitrogen in soil. Prefers cool climates. Soak and nick seeds before sowing for best germination.
Expect your Lupine to be ready for harvest in approximately 365 days from planting.
Use the search above or browse by zone or state to find the perfect planting dates for your location.