Perennial vegetable.

Asparagus, a perennial vegetable, is a valuable and delicious addition to any property. Known for its tender shoots, it offers a delectable harvest in spring. Rich in vitamins and minerals, asparagus enhances both culinary and nutritional experiences. Once established, this low-maintenance plant returns year after year, providing a sustainable food source. Its feathery foliage also adds ornamental value to your garden. Planting asparagus contributes to self-sufficiency, promoting a sense of accomplishment and connection to your land. A well-planned asparagus bed yields long-term rewards, making it a wise investment for both culinary enthusiasts and those seeking resilient, homegrown produce.

Hardiness zones

Asparagus (Asparagus officinalis) thrives in USDA Hardiness Zones 2 to 8, although specific varieties may have different zone requirements.

Planting

1. Timing: Plant asparagus in early spring when the soil is workable.
2. Sun Exposure: Choose a sunny location for your asparagus bed, providing at least 6-8 hours of sunlight per day.
3. Soil Preparation:
   • Asparagus prefers well-draining, sandy-loam soil.
   • Ensure the soil pH is between 6.5 and 7.5.
4. Spacing: Plant asparagus crowns or seeds in trenches about 12-18 inches apart.

Planting asparagus crowns

1. Prepare the Crowns: Soak the asparagus crowns in water for a few hours before planting.
2. Trench Planting: Dig a trench 6-8 inches deep and place the crowns with their roots spread out.
3. Cover with Soil: Cover the crowns with 2 inches of soil initially and gradually fill in the trench as the shoots emerge.

Planting Asparagus Seeds

1. Seed Starting: Start seeds indoors 8-10 weeks before the last expected frost.
2. Transplanting: Transplant seedlings outdoors when they are around 12 inches tall.

Care

1. Watering: Keep the soil consistently moist, especially during dry periods.
2. Mulching: Apply a layer of mulch to help retain moisture and suppress weeds.
3. Fertilization: Fertilize in early spring with a balanced fertilizer, and side-dress with compost in subsequent years.
4. Harvesting: Begin harvesting in the second or third year after planting when the spears are about 6-8 inches tall.

Winter care

1. Cleanup: Cut down the asparagus ferns in late fall after they turn brown.
2. Mulching: Apply a layer of mulch to protect the crowns during winter.

Proper care and patience are essential, as it takes a couple of years for asparagus plants to establish before reaching their full production potential. Regular maintenance and adherence to these guidelines will ensure a bountiful and long-lasting asparagus harvest in your garden.

Harvesting asparagus

Harvesting asparagus correctly is crucial to ensure continued production and the health of the plant. Here’s the best way to harvest asparagus:

1. Timing
   • First Two Years: Resist harvesting during the first two years to allow the plants to establish strong root systems.
   • Subsequent Years: Start harvesting in the third year when the spears are about 6-8 inches tall and have a diameter of around 1/2 inch.
2. Frequency
   • Harvest asparagus spears when they are still tight and before the tips begin to open.
   • Harvest every 2-4 days during the peak season.
3. Method
   • Use a sharp knife or asparagus harvesting tool.
   • Cut the spear just below the soil surface, about 1-2 inches below the soil level.
4. Stop Harvesting
   • Stop harvesting when the spear diameter becomes less than 1/4 inch.
   • Allow remaining spears to grow and mature to ferns to support the plant’s health.
5. Duration
   • Continue harvesting for 6-8 weeks during the spring, depending on local climate and weather conditions.
6. Late Season
   • In late spring, allow some spears to grow into tall, fern-like foliage. These ferns contribute to energy storage for the next season.

Tips:

• Never harvest more than one-third of the total spears at a time to avoid stressing the plant.
• If you notice thin spears, consider reducing or stopping harvest to allow the plant to recover and produce thicker spears in the future.
• Cease harvesting by early summer to allow the remaining spears to grow into ferns, storing energy for the next year’s harvest.

By following these guidelines, you’ll ensure a sustainable and productive harvest from your asparagus plants for many years.

Asparagus varieties for northern gardens

Asparagus is a perennial vegetable that can thrive in northern gardens, but it’s essential to choose varieties that are well-suited to cooler climates. Here are some varieties of asparagus that are known to perform well in northern gardens:

1. Jersey Knight
   • This variety is known for its tolerance to colder temperatures and is well-suited for northern climates.
   • It produces large, tender spears and is resistant to rust, a common fungal disease.
2. Purple Passion
   • While not necessarily more cold-hardy, Purple Passion is a unique variety known for its striking purple color. It can be a good addition to northern gardens, and its color can add visual interest to your dishes.
3. Jersey Giant
   • Another Jersey variety, Jersey Giant is cold-resistant and produces thick, flavorful spears.
   • It’s a reliable choice for northern climates.
4. Guelph Millennium
   • This Canadian-bred variety is adapted to colder conditions and is known for its disease resistance.
   • It produces uniform, medium to large-sized spears.
5. Mary Washington
   • Although it’s an older variety, Mary Washington is a classic choice for northern gardens.
   • It has good cold tolerance and is a reliable producer of medium-sized asparagus.
6. Apollo
   • Apollo is a hybrid variety that is well-suited for cooler climates.
   • It produces early, uniform spears and has good disease resistance.

When planting asparagus in a northern garden, it’s important to consider factors such as hardiness, disease resistance, and time to maturity. Additionally, providing well-drained soil, proper spacing, and winter mulching can contribute to successful asparagus cultivation in colder regions.

Before choosing a variety, it’s always a good idea to check with local nurseries, agricultural extension offices, or gardening experts to get recommendations based on the specific conditions of your garden and region. They can provide valuable insights into which varieties have been successful in your area.

Buying asparagus online

When visiting these websites, look for the “asparagus crowns” or “asparagus roots” section to find the specific products you need. Additionally, check for customer reviews and the availability of the asparagus varieties that suit your preferences and climate.

1. Nourse Farms: noursefarms.com
2. Gurney’s: gurneys.com
3. Burpee: burpee.com
4. Johnny’s Selected Seeds: johnnyseeds.com
5. Park Seed: parkseed.com

Keep in mind that availability may vary depending on the time of year, and some websites may only ship to certain regions. Always review the shipping policies, payment options, and customer service details before making a purchase. If you have specific local nurseries or gardening centers that you trust, it’s also worth checking if they have an online presence for ordering.

Cooking With asparagus

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