Choosing the Right Location
When it comes to growing asparagus, selecting a suitable location is crucial. Asparagus plants thrive in well-draining, fertile soil and require a sunny spot with full sun to partial shade. In horticultural zones 3-8, it’s not necessary to plant asparagus every year, so choose a spot where it can flourish long-term.
- Look for a location with good air circulation and sunlight
- Avoid areas with standing water or where water tends to collect
- Consider the soil type and pH level, as asparagus prefers a slightly acidic to neutral soil pH (around 6.0-7.0)
Planting Asparagus Crowns
While it’s possible to grow asparagus from seeds, planting year-old crowns is the most recommended method. Crowns, also known as dormant roots, provide a head start by reducing the time to your first harvest by a year. You can find crowns at garden centers and in catalogs.
- Plant crowns in early spring, digging trenches 12-18 inches wide, 6-12 inches deep, and 3 feet apart (if planting more than one row)
- Plant crowns 12-18 inches apart, spreading the roots over the bottom of the trench, then cover lightly with 2-3 inches of soil, and water well
- Allow the soil to settle and the roots to establish themselves before adding more soil and mulch
Caring for Your Asparagus Plant
Asparagus plants require minimal maintenance once established. However, they do need regular watering, especially during dry spells. Water deeply, but avoid overwatering, which can lead to root rot and other problems.
| Watering | Deeply, but avoid overwatering |
| Fertilization | No need for fertilization |
| Mulching | Apply mulch to retain moisture and suppress weeds |
Harvesting Asparagus
Asparagus is ready to harvest in the spring of its third year, when stalks are 6-10 inches tall and about as thick as a pencil. Use a sharp knife to cut each stalk slightly below the soil line, but take care not to damage emerging stalks. You can continue to harvest for roughly six weeks, depending on your climate.
“I can harvest asparagus until the beginning of July in my suburban New York garden. It’s amazing how much energy it stores in those remaining stalks for the following year’s harvest.” – Jessica Damiano
Companion Planting
Avoid planting onions and garlic near asparagus, as they can stunt its growth.
