Onion Candy F1 Seedling Tray

For best results with Onion Candy F1, plant one rooted plug per 4-inch container or 1801 cell. Use well-drained soil with a pH of 6.0-7.0, average daily temperatures of 60-85 degrees, and light feed (50-75 ppm N). You may see Thrips and Onion Maggots. Botrytis, Fusarium Rot, and Downy Mildew can develop in overly wet, cool, or humid conditions. Don't pinch or use PGRs.

This plant is grown for culinary use. Prevent bolting by growing plants at the right time of year and providing proper nutrients, light, and water. 

This plant doesn't require pinching.

Space containers for adequate airflow and sunlight penetration around the base of each plant. Spacing 4-inch containers 6-8" apart should allow for good circulation and easy access.

Control the height of onion seedling plugs by regulating temperature and light conditions in your greenhouse. Onions prefer temperatures of 60-68°F and full sun for 12-14 hours per day. Additionally, providing adequate water and fertilizer can prevent plants from becoming leggy. We don't recommend using chemical growth regulators on vegetable plants.

You may see Thrips and Onion Maggots, although Onions aren't prone to pests.

1. Thrips are tiny, slender insects that can cause significant damage to onion seedlings by feeding on the leaves and spreading viruses. Though difficult to see with the naked eye, Thrip damage is often visible as silver streaks or white patches on the leaves. Control infestations with insecticidal soap or neem oil; or introduce predatory mites, lacewings, or ladybugs. 

2. Onion Maggots are the larvae of a type of fly that lays its eggs in the soil near the onion seedlings. The larvae then feed on the roots and bulbs of the seedlings, causing stunted growth and yellowing of the leaves. Use insecticidal soap or neem oil and physical barriers like row covers or mesh netting to keep the flies away from the onion seedlings. Crop rotation can also help to reduce the risk of infestation.

You may see Fusarium, Botrytis, and Downy Mildew affect Onions in your greenhouse.

1. Fusarium Basal Rot is a fungal disease that infects plant tissue, causing stems and roots to turn brown or black or grow white or pink mold. The best treatment for this disease is prevention. Start with our carefully-grown, disease-free seedling plug trays, avoid overwatering, and use clean, well-drained soil for transplanting. Sanitize tools and work areas and rotate crops to prevent the spead of disease.

2. Botrytis Leaf Blight is a fungal disease that displays as gray mold on foliage, causing plants to wither and die. It flourishes in humid conditions. Remove and dispose of infected leaves, provide good airflow, and use fungicides or biological controls, such as Bacillus subtilis or Trichoderma, to prevent the spread of the disease. 

3. Downy mildew is a fungal disease that causes leaves to turn yellow, wilt, and develop gray patches. Provide good circulation in your greenhouse and maintain proper humidity levels to prevent infection. Copper and Potassium Bicarbonate act as biological controls for this disease.

Implement an Integrated Pest Management plan in your greenhouse.

We recommend planting one seedling plug per 1801 cell or 4-inch container. Use well-drained soil and completely bury the ellepot in the center of the container. Water the seedling plug after transplanting.