Perennial crop that produces tender spears for 15-20 years once established. Requires patience for the first two years but rewards with decades of spring harvests.
Planting calendar
Direct sow / transplant
4 weeks before your last spring frost.
Plant crowns in spring; do NOT harvest for first 2 years to establish root system
Spacing & harvest
Plant spacing: 12-18 inches
Row spacing: 48-60 inches
Days to harvest: 730 days
Ready when: Spears 6-8 inches tall and pencil-thick or greater; snap easily when bent at natural breaking point; do not harvest first 2 years
Lawn Guardian turns this guidance into a schedule timed to your USDA zone and this week's actual weather — and adapts every time you log what you've done.