When to Plant Asparagus in Zone 4
Asparagus officinalis
Last updated: Apr 25, 2026 · Sources: USDA, NOAA, Cooperative ExtensionZone 4 Planting Schedule
Start Indoors
Apr 19
6–8 weeks before transplant
Transplant Out
May 17
After last frost (May 10)
Direct Sow
May 17
Directly in garden bed
First Harvest
year 2-3
730–1095 days after planting
Season Ends
ongoing
Before first frost (Sep 25)
Quick Facts
Sunlight
☀️ Full Sun
Water Needs
💧💧 Moderate
Spacing
18 inches apart
Planting Depth
6.0 inch
Min Soil Temp
50°F
Germination
14–21 days
Days to Maturity
730–1095 days
Frost Tolerance
Heavy frost tolerance
Soil pH
6.5–7.5
Difficulty
Moderate
Recommended for Zone 4
🌱 Asparagus Seeds & Supplies
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Companion planting improves growth, deters pests, and makes better use of garden space.
✓ Good Companions
✗ Avoid Nearby
Garlic Onion
Asparagus Schedule — All Zones
| Zone | Start Indoors | Transplant | Direct Sow | Harvest Start | Harvest End |
|---|---|---|---|---|---|
| Zone 3 | Apr 24 | May 22 | May 22 | year 2-3 | ongoing |
| Zone 4 | Apr 19 | May 17 | May 17 | year 2-3 | ongoing |
| Zone 5 | Apr 9 | May 7 | May 7 | year 2-3 | ongoing |
| Zone 6 | Mar 25 | Apr 22 | Apr 22 | year 2-3 | ongoing |
| Zone 7 | Mar 15 | Apr 12 | Apr 12 | year 2-3 | ongoing |
| Zone 8 | Feb 27 | Mar 27 | Mar 27 | year 2-3 | ongoing |
| Zone 9 | Feb 7 | Mar 7 | Mar 7 | year 2-3 | ongoing |
| Zone 10 | Jan 20 | Feb 17 | Feb 17 | year 2-3 | ongoing |
📚 Data Sources
Frost dates: NOAA Climate Normals 1991–2020, National Centers for Environmental Information.Hardiness zones: USDA Plant Hardiness Zone Map, Agricultural Research Service.
Growing requirements: Cooperative Extension Services — NC State, Penn State, University of Florida IFAS.
Companion planting: Cornell University Cooperative Extension.
Data compiled from public agricultural sources. Always verify with your local extension office for micro-climate adjustments.