How to Grow Scallions in Washington

Scallions, also known as green onions or spring onions, are a versatile and flavorful addition to a variety of dishes. They are easy to grow and can thrive in various conditions, making them an excellent choice for gardeners in Washington state. This article will cover everything you need to know about growing scallions, from selecting the right variety to harvesting your crop.

Understanding Scallions

Scallions are a type of Allium, which means they are related to garlic, onions, and leeks. They are grown primarily for their green tops and have a milder flavor compared to mature onions. Scallions can be used fresh in salads, as a garnish, or cooked in various dishes. Their quick growth cycle makes them particularly appealing for home gardeners.

Choosing the Right Variety

In Washington, several varieties of scallions can thrive. Some popular choices include:

1. Evergreen Hardy: This variety is cold-resistant and can be harvested multiple times throughout the growing season.
2. Japanese Bunching: Known for its sweet flavor and tender stalks, this variety is great for both culinary uses and fresh eating.
3. White Lisbon: A traditional choice that offers a robust flavor and is suitable for spring and fall planting.

Selecting the right variety will depend on your preferences in taste and growth characteristics.

When to Plant Scallions in Washington

Timing your planting is crucial for successful scallion growth in Washington’s varying climates. Generally, scallions can be planted in two main seasons:

Spring Planting

• Start Indoors: For an early start, you can begin seeds indoors 6-8 weeks before the last expected frost date (typically around mid-April in most regions of Washington).
• Direct Sow Outdoors: Plant seeds directly outdoors around mid-April when the soil temperature reaches about 65°F (18°C).

Fall Planting

• In late summer (around late July to August), you can plant scallion seeds again for a fall harvest, especially if you choose cold-hardy varieties.

By staggering your planting times, you can enjoy fresh scallions from late spring through fall.

Soil Preparation

Scallions prefer well-draining soil rich in organic matter. Here’s how to prepare your soil:

1. Choose the Right Location: Select a sunny spot that receives at least 6 hours of sunlight daily.
2. Soil Testing: Test your soil pH using a home testing kit. Scallions prefer a pH level between 6.0 and 7.0.
3. Amend the Soil: If your soil is deficient, add compost or well-rotted manure to enhance fertility and drainage.
4. Tilling: Till the top 12 inches of soil to incorporate organic matter evenly.

Planting Scallions

Once your soil is prepared, follow these steps for planting:

Seed Sowing

1. Row Spacing: Create furrows spaced about 12 inches apart.
2. Seed Depth: Sow seeds about ¼ inch deep and cover lightly with soil.
3. Thinning: Once seedlings emerge (in about 7-10 days), thin them to about 4-6 inches apart for optimal growth.

Transplanting Seedlings

If starting indoors:

1. Transplanting Time: Harden off seedlings by gradually exposing them to outdoor conditions for one week before transplanting.
2. Spacing: Space them similarly as direct-sown seeds (4-6 inches apart).

Watering and Fertilizing

Consistent moisture is key to growing healthy scallions:

1. Watering Schedule: Water regularly, especially during dry spells, ensuring the soil remains moist but not waterlogged.
2. Mulching: Apply a layer of mulch around the plants to retain moisture and suppress weeds.
3. Fertilizing: Use a balanced fertilizer or organic options like fish emulsion every few weeks during active growth.

Pest Management

While scallions are relatively pest-resistant, some common nuisances include:

1. Aphids: These small insects can cluster on leaves but can be controlled with insecticidal soap or neem oil.
2. Onion Maggots: Prevent this pest by rotating crops annually and avoiding overwatering.
3. Weeds: Regularly check for weeds that compete for nutrients; hand-pulling is often effective.

Harvesting Scallions

Scallions are typically ready to harvest in about 60-90 days from seed sowing or 30 days after transplanting seedlings, depending on the variety:

1. Timing: They can be harvested when they reach about 6–8 inches tall or when they start bulbing at the base.
2. Method: Use garden scissors or a sharp knife to cut the scallions at ground level; avoid pulling them out of the ground as this may disrupt nearby plants.
3. Storage: Freshly harvested scallions can be stored in the refrigerator for up to a week wrapped loosely in plastic.

Winter Care and Forcing Scallions

In mild winter areas of Washington, consider overwintering your scallions:

1. Mulching: Apply a thick layer of mulch to protect them from frost.
2. Forcing Indoors: You can also force scallion bulbs indoors by placing them in water or potting soil—this allows you to have fresh greens even during winter months!

Future Plantings and Crop Rotation

After harvesting scallions, it’s essential to practice crop rotation to maintain soil health:

1. Rotate crops yearly by planting them in different areas of your garden to prevent pests and diseases from building up in the soil.
2. Consider following scallions with nitrogen-fixing plants such as legumes (e.g., peas or beans) which enrich the soil.

Conclusion

Growing scallions in Washington is both rewarding and easy with proper planning and care. By following these guidelines—from selecting the right variety to managing pests—you’ll have abundant harvests that will enhance your culinary creations all season long. Whether you’re an experienced gardener or just starting out, adding scallions to your garden will surely yield delicious results!