Climate matters. This page is a practical baseline. Confirm cultivar, local frost/heat conditions, mature size and regional restrictions before planting.
Asparagus — Growing reference
| Scientific name | Asparagus officinalis |
|---|---|
| Seed germination (days) | 14–21 |
| Soil temperature for germination (°C) | 15.6–29.4 |
| First harvest or flowering (days) | 730–1095 |
| Measured from | Transplant |
| Plant spacing (cm) | 45.7 |
| Mature height (cm) | 91.4–152.4 |
| Mature spread (cm) | 45.7–61 |
| USDA hardiness zones | 3–8 |
| Light | Full sun |
| Water | Moderate |
| Sowing method | Transplant |
Growing directions
Set one-year crowns in 8-in-deep trenches with roots spread over a ridge of compost, then gradually backfill as growth emerges. Do not harvest any spears in the first year and harvest lightly in year two to let the root system build strength. Beginning in year three, cut or snap spears at soil level when they are 6–8 in tall and before the tips begin to feather open. Stop harvesting after 4–6 weeks to allow ferns to grow and replenish the crown for the next season.
Source and local conditions
Typical planning ranges from OpenPlantDB (CC0). Cultivar, climate, season and growing method can change these values. Confirm the seed label and local guidance before planting.
Source & verification
OpenPlantDB · CC0