Wasabi Arugula Seed (Diplotaxis erucoides)

Starting Seeds Indoors

1. Select Appropriate Containers: Any small container with drainage holes, such as seed trays, pots, or even recycled containers, will work. Ensure they are clean and have adequate drainage.
2. Use Seed-Starting Mix: Fill your containers with a fine-textured, sterile seed-starting mix to promote good root development and minimize the risk of diseases.
3. Sowing Depth: Arugula seeds should be sown at a shallow depth, about ¼ inch deep.
4. Moisture Management: Keep the soil consistently moist but not soggy. Using a spray bottle to water gently can prevent disturbing the small seeds.
5. Light Requirements: Provide plenty of light. A sunny windowsill or artificial grow lights should give about 12-16 hours of light per day to encourage strong growth.
6. Temperature: Arugula seeds germinate best at temperatures between 45-75°F (7-24°C). They can handle cooler temperatures once established.
7. Transplanting: Once seedlings have grown 2-3 true leaves and are big enough to handle, they can be transplanted into larger pots or prepared for outdoor planting.

Planting Arugula

1. Timing: Arugula can be sown directly outdoors as soon as the soil can be worked in early spring. For a continuous harvest, sow seeds every 2-3 weeks until late spring, then again in late summer for a fall crop.
2. Site Selection: Choose a site with full sun to partial shade. Arugula can tolerate light shade, which can be beneficial in warmer climates to reduce bolting.
3. Soil Preparation: Prepare the soil by loosening it and working in some compost to improve fertility and drainage. Arugula is not overly demanding but appreciates well-drained, fertile soil.
4. Sowing: Plant seeds ¼ inch deep, spacing them about 1 inch apart. Rows should be spaced about 6-10 inches apart.
5. Watering: Water regularly to maintain even soil moisture. Consistent watering helps keep leaves tender and flavorful.
6. Thinning: When seedlings are a few inches tall, thin them so they are 4-6 inches apart. The thinnings can be used in salads.
7. Harvesting: Start harvesting leaves as soon as they are large enough to eat, typically within 4-6 weeks from sowing. Cut leaves from the outer edges, allowing the center leaves to continue growing.
8. Pest and Disease Management: Watch for flea beetles and aphids. Covering the plants with a row cover can help protect them. Water in the early part of the day to prevent leaf diseases.

By following these simple steps, you can successfully start arugula seeds indoors and grow this quick, delicious crop in your garden, enjoying fresh, peppery greens from early spring through fall.