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garden
Asparagus
Asparagus officinalis
EdibleMedicinal
Edible Partsshoots
Overview
A long-lived perennial vegetable that can produce spears for 20 years or more from a single planting. Asparagus crowns send up their first harvestable spears in their third year, rewarding patient gardeners with one of spring's most prized delicacies. The feathery ferns that develop after harvest are beautiful in their own right and nourish the roots for next year's crop.
Growing Conditions
LightFull Sun
MoistureModerate
Hardiness Zones3 — 8
Height1.5m
Spread0.5m
Growth HabitForb/herb
LifespanPerennial
Pollinator Valuehigh
Companion Planting & Soil
Good Companions
Avoid Planting Near
Soil pH6.5 — 7.5
Soil TypeDeep, well-drained sandy loam rich in organic matter
Planting Calendar
When to sow, transplant, and harvest by growing zone.
| Zone | Action | Months | Notes |
|---|---|---|---|
| Cold (1-2) | Transplant | May — May | Plant crowns in spring; 6-8" deep trench |
| Cold (1-2) | Harvest | May — Jun | Harvest spears for 2-4 weeks (skip first 2 years) |
| Cool (3-4) | Transplant | Apr — May | Plant crowns when soil workable |
| Cool (3-4) | Harvest | Apr — May | Harvest 4-6 weeks after established |
| Moderate (5-7) | Transplant | Mar — Apr | Plant crowns in early spring |
| Moderate (5-7) | Harvest | Mar — May | Harvest when spears 6-8" tall |
| Warm (8-9) | Transplant | Feb — Mar | Plant crowns in late winter |
| Warm (8-9) | Harvest | Feb — Apr | Spring harvest window |
| Hot (10+) | Transplant | Jan — Feb | Plant crowns in winter |
| Hot (10+) | Harvest | Jan — Mar | Early spring harvest |
Uses
Culinary
- Grilled, roasted, or steamed as a side dish
- Shaved raw into salads and risotto
- Blanched and pickled for preserving
Medicinal
- Natural diuretic supporting kidney function
- Rich in folate, essential during pregnancy
- Contains asparagine, an amino acid that supports nervous system health
Other Uses
- Ornamental fern-like foliage in perennial borders
- Cut ferns used in floral arrangements
Safety Notes
Spears are safe cooked or raw. Red berries on mature plants are mildly toxic — do not eat. May cause allergic dermatitis in some handlers.
