How to Grow Arugula in Wisconsin

Arugula (Eruca sativa), also known as rocket or rucola, is a leafy green vegetable that belongs to the mustard family. Its peppery flavor and nutrient-rich profile make it a favorite among chefs and home cooks alike. Growing arugula in Wisconsin is a rewarding endeavor, especially given the state’s favorable growing conditions during certain times of the year. This article will provide you with all the information you need to cultivate your own arugula, from planting to harvest.

Understanding Arugula

Before diving into the specifics of growing arugula, it’s essential to understand its characteristics and growth requirements. Arugula is a cool-season crop, which means it thrives in cooler temperatures. Ideal growing temperatures range between 45°F and 65°F. In Wisconsin, the spring and fall provide perfect conditions for arugula cultivation.

Nutritional Benefits of Arugula

Arugula is not only flavorful but also packed with nutrients. It is rich in vitamins A, C, K, and several B vitamins. Additionally, arugula contains minerals like calcium, potassium, and magnesium. The presence of glucosinolates gives it potential cancer-fighting properties and can aid digestion.

Choosing the Right Variety

While there are several varieties of arugula available, two popular options are:

Wild Arugula: This variety has a more pronounced flavor and is often more peppery than other types.
Cultivated Arugula: This variety is milder and tends to have broader leaves, making it suitable for salads.

In Wisconsin’s climate, both varieties can thrive, so choose based on your taste preference and culinary needs.

When to Plant Arugula in Wisconsin

Timing is crucial when growing arugula in Wisconsin. The state experiences distinct seasons that influence when you should plant:

Spring Planting

Start Indoors: You can start seeds indoors about 4-6 weeks before the last expected frost date (approximately mid-April).
Direct Sow Outdoors: Once the soil temperature reaches around 40°F (usually late March to early April), you can directly sow arugula seeds outdoors.

Fall Planting

For a fall crop, sow seeds directly in the garden from late July to mid-August. This timing allows plants to mature before the first frost, which generally occurs around late September to early October in most regions of Wisconsin.

Preparing the Soil

Healthy soil is critical for successful arugula growth. Here’s how to prepare your garden bed:

Soil Testing

Conduct a soil test to assess pH levels and nutrient content. Arugula prefers slightly acidic to neutral soil (pH 6.0 to 7.0).

Soil Amendments

Based on your soil test results, amend the soil as needed:

Adding Organic Matter: Mix compost or well-rotted manure into your garden bed to improve soil structure and fertility.
Fertilization: If necessary, use a balanced fertilizer with equal parts nitrogen, phosphorus, and potassium.

Tilling

Loosen the top 12 inches of soil by tilling or turning it over with a garden fork. This helps aerate the soil and prepares it for seed planting.

Planting Arugula Seeds

Once your garden bed is prepared, it’s time to plant:

Direct Sowing Instructions

Spacing: Sow seeds about ½ inch deep and space them approximately 1 inch apart in rows that are 12-18 inches apart.
Watering: After sowing, water gently but thoroughly to ensure good seed-to-soil contact.

Transplanting Seedlings

If you started seeds indoors:

Transplant Timing: Once seedlings have at least two true leaves and outdoor temperatures are consistently mild (around mid-April), they can be transplanted outside.
Spacing: Transplant seedlings about 6 inches apart in rows that are 12-18 inches apart.

Caring for Your Arugula Plants

Proper care will ensure robust plant growth:

Watering

Arugula requires consistent moisture but dislikes soggy conditions. Water your plants about once or twice a week depending on rainfall. Use mulch around plants to help retain soil moisture.

Weeding

Weeds can compete with your arugula for nutrients and water. Regularly check your garden for weeds and remove them by hand or use mulch as a preventative measure.

Pest Control

While arugula is relatively pest-resistant, keep an eye out for aphids and flea beetles:
– Aphids: These tiny insects can be removed by spraying with water or using insecticidal soap.
– Flea Beetles: To deter flea beetles, consider using row covers until plants are well established.

Harvesting Arugula

Harvesting arugula can begin as soon as the leaves reach a desirable size—typically about 4-6 inches long:

Techniques for Harvesting

Cutting Leaves: Use scissors or garden shears to cut outer leaves just above their base while leaving the inner leaves intact for future growth.
Whole Plant Harvest: If you want a more substantial harvest, pull up entire plants when they reach about 6-8 inches tall.

Harvesting regularly encourages new growth and can extend your harvest period throughout spring or fall.

Common Challenges When Growing Arugula

While arugula is generally easy to grow, there are some challenges you may encounter:

Bolt Formation

As temperatures rise (above 70°F), arugula may bolt (flower) prematurely, resulting in bitter leaves. To avoid this:
– Choose Heat-Tolerant Varieties: Select varieties bred for heat resistance.
– Provide Shade: Use row covers or shade cloths during hot spells.

Disease Issues

Keep an eye out for fungal diseases like downy mildew:
– Air Circulation: Ensure proper spacing between plants.
– Avoid Overhead Watering: Water at the base of plants to keep foliage dry.

Conclusion

Growing arugula in Wisconsin is not only achievable but also highly rewarding. With its fast-growing nature and incredible health benefits, this leafy green can enhance any home garden or kitchen table. By understanding the ideal planting times, preparing your soil adequately, caring for your plants diligently, and harvesting thoughtfully, you’ll enjoy fresh, flavorful arugula throughout its growing season.

Whether you’re adding it to salads, using it as a pizza topping, or incorporating it into smoothies, homegrown arugula brings both culinary delight and nutrition right from your own backyard! Start planting today for a bountiful harvest tomorrow!