Celeriac ‘Monarch’ is a traditional, high-quality, open-pollinated variety that has been a hit with both amateur gardeners and organic growers for many years. Monarch develops long, dark green leaves. The large, heavy, creamy white roots are easy to clean and are wonderfully white and rich in fibre on the inside. The mildly aromatic roots are perfect for the fresh market, but their good keeping qualities also make this variety ideal for storing.
Celeriac can be grown on almost all soils, but good moisture management and drainage are very important. To ensure regular growth, celeriac needs a constant supply of water. Irregular growth with growth spurts can cause rot. Roots grown in sandy loam and clay soils have the best keeping qualities. Roots grown in sandy or peaty soils are less suitable for storage.
Storing the roots for a few days at just above freezing after harvesting gives them a slightly milder flavour. NB: It’s not just the root that is packed with flavour; the stems are also great for use in dishes such as soups or pasta sauces.
For an early outdoor crop, sow from mid-February onwards. You will need a temperature of at least 15°C to avoid bolting (formation of flower stems). In a cold greenhouse or polytunnel, start sowing in the second week in March.
Transplant: mid April-May
Spacing: 50x40 cm
Harvest: August-October, approx. 150 days after transplanting (for maximum storage life)
Soil: plenty of organic matter and nitrogen, pH 6.5-7
Resistance: good resilience to rust