What To Know
- The best time to transplant arugula seedlings is when they have developed their first set of true leaves, which are the leaves that grow after the cotyledons (seed leaves).
- Start by placing the seedlings in a shaded area for a few hours each day, gradually increasing the amount of sunlight they receive.
- Place each seedling in a hole and fill in the soil around the roots, gently firming it down.
Arugula, also known as rocket or roquette, is a popular leafy green that adds a peppery flavor to salads, sandwiches, and other dishes. Growing arugula from seed is easy, but transplanting seedlings to their final growing location can be a bit tricky. Follow these step-by-step instructions to ensure successful arugula transplantation and a bountiful harvest.
Choosing the Right Time
The best time to transplant arugula seedlings is when they have developed their first set of true leaves, which are the leaves that grow after the cotyledons (seed leaves). This typically occurs 2-3 weeks after germination. Transplanting earlier can damage the delicate seedlings, while waiting too long can result in rootbound plants.
Preparing the Soil
Arugula prefers well-drained soil with a pH between 6.0 and 7.0. Amend the soil with compost or manure to improve fertility and drainage. If the soil is heavy or compacted, consider raised beds or containers to provide better drainage.
Hardening Off the Seedlings
Before transplanting, it’s important to harden off the seedlings. This involves gradually exposing them to outdoor conditions over a period of 7-10 days. Start by placing the seedlings in a shaded area for a few hours each day, gradually increasing the amount of sunlight they receive. By the end of the hardening-off period, the seedlings should be able to withstand full sun.
Digging the Holes
Dig holes in the prepared soil that are slightly larger than the root balls of the seedlings. Space the holes 6-8 inches apart to allow for adequate growth.
Transplanting the Seedlings
Gently remove the seedlings from their containers and loosen any tangled roots. Place each seedling in a hole and fill in the soil around the roots, gently firming it down. Water the seedlings well to settle the soil and remove any air pockets.
Watering
Water the transplanted arugula seedlings regularly, especially during hot, dry weather. Avoid overwatering, as this can lead to root rot.
Fertilizing
Fertilize the arugula seedlings with a balanced fertilizer every 2-3 weeks. Avoid over-fertilizing, as this can result in excessive leaf growth and bitter greens.
Mulching
Mulch around the arugula plants with straw or compost to retain moisture, suppress weeds, and regulate soil temperature.
Harvesting
Arugula is ready to harvest when the leaves are 3-4 inches long. Cut the leaves at the base of the plant, leaving the roots intact for continued growth. Arugula can be harvested multiple times throughout the growing season.
Troubleshooting Common Problems
- Bolting: Arugula will bolt (produce flowers and seeds) if it is exposed to high temperatures or stress. To prevent bolting, provide arugula with adequate water and shade during hot weather.
- Yellowing Leaves: Yellowing leaves can be a sign of nutrient deficiency, overwatering, or disease. Check the soil moisture and fertility, and treat any diseases as necessary.
- Leggy Plants: Leggy plants are caused by insufficient sunlight. Ensure that arugula is receiving at least 6 hours of sunlight per day.
Frequently Asked Questions
- Q: Can I transplant arugula in the fall?
A: Yes, arugula can be transplanted in the fall for a fall or winter harvest. However, it’s important to protect the plants from frost.
- Q: How often should I water arugula seedlings?
A: Water arugula seedlings regularly, especially during hot, dry weather. Avoid overwatering, as this can lead to root rot.
- Q: Can I grow arugula in containers?
A: Yes, arugula can be grown in containers. Use a well-draining potting mix and ensure the containers have drainage holes.
