Vegetable · Perennial vegetable
Asparagus
Asparagus officinalisA long-term investment that repays a decade or more of spring spears once established. The bed needs a full season or two to build root reserves before any real harvest begins. The one rule: resist cutting spears until the crowns are truly established.
Sow depth
8 in (crown depth)
Spacing
16 in · rows 3 ft
Sun
Full sun
Germination
N/A — planted as crowns
Time to harvest
700–1095 days
Difficulty
Moderate
When to sow asparagus
- Sow from around your last expected frost until about 6 weeks after your last expected frost.
Plant crowns, not seed — dig trenches and spread roots over a mound.Set crowns 8 in deep, cover with 2 in of soil, and fill in as shoots grow.Choose well-drained, weed-free ground — asparagus stays put for years.
Weed relentlessly in the first two seasons; shallow roots hate competition.Feed with compost each spring and again after the harvest window closes.Let ferny foliage grow all season to recharge the crown for next year.
Wait two full seasons before cutting any spears at all.Snap or cut spears at soil level once they reach 6–8 in.Stop cutting after six weeks so the plant can rebuild its reserves.
Companion plants
Tomatoes and asparagus are a classic pairing — tomato foliage is thought to deter the asparagus beetle.
Watch out for
Asparagus beetle — Strips ferny foliage through summer. Hand-pick adults and larvae, or dust with kaolin clay.Crown rot — Sets in on waterlogged ground. Plant on a raised mound in beds with sharp drainage.