8Tadorna Leek is a proven, open-pollinated variety of leek with stocky, white shanks and dark green leaves. It produces strong leaves that are 1.5″ wide. In cooler climates, it can be planted in early fall for a late fall/early winter harvest. It has a great holding ability and can be left in the field to harvest as needed. In warmer climates, it can be overwintered. To overwinter leeks, plant in early November and harvest in spring. Seeds are pelleted for ease of planting.
Tadorna Leek can be direct-seeded or transplanted, although we recommend transplanting. For direct-seeding, plant seeds 2″ apart along the row with a row spacing of 24″. Once seedlings emerge, thin seedlings to a 6″ plant spacing along the row. Tadorna Leek seeds can be planted with our Hoss Garden Seeder. We recommend using a #3 seed plate and modifying the hole size slightly to accommodate the leek variety being planted. For denser plantings, more holes may need to be drilled to accommodate a thicker spacing.
For transplanting, plant one seed per cell in our heavy-duty seed starting trays. Once the green stems reach 6-8″ in length and/or they can be easily pulled from the seed trays, the transplants are ready to go in the ground. Transplant leeks 6″ apart along the row with a row spacing of 24″. If drip irrigation is used, leeks may be planted on double rows with drip irrigation in the middle. We suggest burying the drip tape 3-4″ deep and planting on both sides of the tape.
Leeks are heavy feeders and will require significant nutrient inputs throughout their lifespan. We recommend feeding them with our 20-20-20 and Ammonium Sulfate fertilizers. Administer 20-20-20 shortly after transplanting. The phosphorous and potassium in the 20-20-20 fertilizer will help to promote solid root development, while the nitrogen will promote vegetative growth. Once transplants are established, we recommend side-dressing or injecting with our Ammonium Sulfate fertilizer. Side dress or inject 1 cup per 20 feet of linear row every 3-4 weeks after transplanting.
Tadorna Leek Planting Information
Planting Method: transplant
When to Plant: early spring and fall
Planting Depth: 1/4″
Seed Spacing: 6″
Row Spacing: 24″
Days to Maturity: 100
Disease Tolerance: Leaf blight