Parsnip TENDER AND TRUE 650 SEEDS £1.70 Quantity: at £1.70 each Add To Basket Forms a long smooth root with little core, ideal for the lighter soils. Sowing instructions: Sow from March until mid May in rows 35 cm apart. Growing instructions: Thin the plant to 15 cm. The harvest can start in autumn but the taste improves after frost. Can stay in the soil during winter. Average contents: 650 seeds.