How to Grow Asparagus
Get Your Exact Asparagus Planting Dates
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🛠️ Supplies You'll Need
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🌿 Plant Overview
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
🌱
Germination
8-21 days
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🌾 Seed Saving Guide
🟡 ModerateWhen to Harvest Seed
Allow red berries to ripen fully on female plants in late summer/fall.
Processing
Mash berries to release seeds, rinse, dry flat for 2 weeks.
Seed Viability
Up to 3 years when stored cool, dark, and dry.
Pro Tip
Asparagus is dioecious — only female plants produce berries. Male plants produce more spears, so save seed selectively.
Seed Storage Supplies
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Asparagus Planting Calendar by Zone
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Frequently Asked Questions
When should I plant Asparagus? +
Start Asparagus seeds indoors 8 weeks before your last frost date, then transplant outdoors 2 weeks after the last frost. Use the search on this page to find exact dates for your ZIP code or city.
How long does Asparagus take to grow? +
Asparagus typically matures in about 730 days from planting. Exact timing varies by variety, soil conditions, and local climate.
Should I start Asparagus indoors or direct sow? +
Asparagus should be started indoors 8 weeks before the last frost date. This gives seedlings time to establish before being transplanted outside after frost danger has passed.
How much sun does Asparagus need? +
Asparagus requires full sun to thrive.
How much water does Asparagus need? +
Asparagus has regular water needs. Consistent moisture is important especially during germination and early growth.
Can you save seeds from Asparagus? +
Yes — seed saving difficulty for Asparagus is rated moderate. Allow red berries to ripen fully on female plants in late summer/fall. Mash berries to release seeds, rinse, dry flat for 2 weeks.
How long do Asparagus seeds last in storage? +
Properly dried and stored Asparagus 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 Asparagus seeds open-pollinated? +
Yes — Asparagus 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 Asparagus
Asparagus is a spring vegetable and a flowering perennial plant. Asparagus is native to most of Europe, northern Africa and western Asia, and is widely cultivated as a vegetable crop.
Expect your Asparagus to be ready for harvest in approximately 730 days from planting.
Use the search above or browse by zone or state to find the perfect planting dates for your location.