PLANTING INSTRUCTIONS

Asparagus Argenteuil is a classic French variety known for its thick, tender spears and exceptional flavor. Growing asparagus requires patience, as it takes a few years to establish a productive bed, but the reward of fresh, homegrown asparagus is well worth the wait. This perennial vegetable can produce for up to 20 years with proper care. Follow this guide to successfully cultivate Asparagus Argenteuil in your garden.

• Best Time to Plant:

  Asparagus is best planted in early spring as soon as the soil can be worked. You can also plant in late fall, but ensure the soil temperature is at least 50°F (10°C). Starting with one-year-old crowns is recommended for faster establishment, though you can also start from seeds.

• Soil Type:

  Asparagus thrives in well-drained, fertile soil rich in organic matter. The ideal soil pH for asparagus is between 6.5 and 7.5. Before planting, amend the soil with plenty of compost or well-rotted manure to enhance fertility and improve soil structure. Asparagus prefers a soil that retains moisture but drains well to prevent waterlogging.

• Spacing:

  Proper spacing is essential for healthy growth and maximum yield. Dig trenches 12-18 inches (30-45 cm) wide and 6-8 inches (15-20 cm) deep. Space the crowns 12-18 inches (30-45 cm) apart in rows that are 3-5 feet (90-150 cm) apart. Cover the crowns with 2 inches (5 cm) of soil and gradually fill in the trench as the plants grow.

CARE TIPS

• Watering:

  Consistent moisture is crucial for growing healthy asparagus. Water the plants regularly, especially during the first two years of growth, ensuring the soil stays consistently moist but not waterlogged. Asparagus has deep roots, so deep watering is beneficial. Mulching around the plants helps retain soil moisture, suppress weeds, and keep the roots cool.

• Fertilizing:

  Asparagus is a heavy feeder and benefits from regular fertilization. Apply a balanced fertilizer, such as 10-10-10, in early spring before the spears emerge and again after the final harvest to support fern growth. Side-dressing with compost or organic fertilizers can also provide a steady nutrient supply throughout the growing season.

• Pruning:

  Pruning is essential for asparagus maintenance. After the final harvest in late spring or early summer, allow the ferns to grow. In late fall, after the ferns have turned brown, cut them back to the ground. This helps reduce the risk of disease and prepares the bed for the next growing season.

HARVESTING

• When to Harvest:

  Asparagus should not be harvested until the third year after planting crowns to allow the plants to establish strong root systems. In the third year, harvest for about two weeks, and in subsequent years, harvest for 6-8 weeks in spring. Spears are ready to harvest when they are 6-8 inches (15-20 cm) tall and before the tips begin to open.

• How to Harvest:

  Use a sharp knife or asparagus harvester to cut the spears at ground level or just below the soil surface. Harvesting in the morning when the spears are cool and crisp is best. Regularly check your asparagus bed during the harvest season, as spears can grow quickly.

TROUBLESHOOTING

• Common Issues:

  •Asparagus Beetles: Small beetles that chew on spears and ferns, causing damage and reducing yield.

  •Fusarium Wilt: A fungal disease that causes yellowing and wilting of the ferns, leading to reduced vigor and yield.

  •Rust: A fungal disease causing orange pustules on ferns, leading to defoliation and reduced plant health.

• Solutions:

  •Asparagus Beetles: Handpick beetles and larvae, and remove affected plant debris. Use insecticidal soap if necessary and encourage beneficial insects like ladybugs.

  •Fusarium Wilt: Use disease-resistant varieties, practice crop rotation, and avoid planting asparagus in the same spot for consecutive years. Ensure proper spacing and air circulation.

  •Rust: Ensure good air circulation and avoid overhead watering. Apply fungicides if necessary and remove affected plant debris.