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Asparagus

vegetable

Perennial — plant once, harvest for 20+ years. Do NOT harvest the first 2 years; let the fern fronds build up the root crown. Begin light harvest in year 2 and full harvest from year 3 onwards. Skip cutting any spears that are pencil-thin.

At a glance

USDA Zones
3–9
Sun
Full sun (6+ hrs)
Water
Medium — water when top inch of soil is dry
Soil
loam, sandy
pH
neutral
Spacing
18 in. between plants
SFG footprint
2×2 ft cell footprint
Days to maturity
~730 days

Planting & harvest windows

Northern Hemisphere timing. Adjust ±4–6 weeks based on your last/first frost dates.

ActivityJanFebMarAprMayJunJulAugSepOctNovDec
Plant
Harvest

Plant  Harvest

Good companions

Keep apart from

Recommended varieties

Add Asparagus to your raised bed — the planner handles spacing and companion warnings automatically.

Open the planner →
← All plantsFull companion chart →