Planting Asparagus Crowns for Years of Harvests

Overview

Asparagus is a perennial vegetable crop. Plants reach 5 ft, produce edible spears for up to 15 years. One established plant yields ~½ lb vitamin-rich spears annually. Plant on garden's north side for maximum light. Don't harvest until 2–3 years old to strengthen crown.

Step 1: Buy Healthy Crowns

Purchase 1-year-old crowns. Inspect for health, no disease signs.

Step 2: Timing and Soil Prep

Plant late spring when soil reaches 50°F. Earlier risks rot in cold, wet ground. Add 3 inches compost, till 12 inches deep.

Step 3: Adjust Soil pH

Test pH. If below 6.0, add limestone and rake in several inches.

Step 4: Dig Furrows

Furrows 6 inches wide, 12 inches deep. Rows 3 ft apart. Make a small mound in each furrow for spreading roots. Apply 1 lb super phosphate (0-20-0) per 50 ft of furrow.

Step 5: Place Crowns

Set crowns on fertilizer mound, 1½ ft apart. Closer spacing increases fungal disease risk from poor air flow.

Step 6: Backfill

Cover with soil, ensuring ≥6 inches over crowns. Fill gently—don't pack, which slows spear emergence.

Step 7: Water

Moisten soil after planting. Asparagus is drought-resistant; water only during droughts.

Step 8: First-Year Care

Let spears grow unharvested the first year to build crown strength for future production.