Large Swollen Root
Grows an enlarged edible root with a firm texture and characteristic celery flavor when provided with suitable growing conditions.
Estimated Delivery:Nov 23 - Nov 27
Free Shipping on All Orders
Giant Celery Root, commonly known as celeriac or knob celery, is a cool-season vegetable grown for its large, swollen, edible root. It develops green, celery-like foliage above a rounded root with creamy-white flesh and a mild, earthy celery flavor. Giant Celery Root is suitable for vegetable gardens and raised beds where rich soil, consistent moisture, and a long growing season can be provided. The exact mature root size and harvest time depend on the variety and growing conditions.
Grows an enlarged edible root with a firm texture and characteristic celery flavor when provided with suitable growing conditions.
Produces roots with a distinctive earthy flavor that works well in soups, stews, roasted dishes, and fresh salads.
Develops attractive green leaves above the root, giving the plant a familiar celery-like appearance.
The harvested root can be peeled, sliced, grated, roasted, mashed, or added to a variety of home-cooked meals.
| Botanical Name | Apium graveolens var. rapaceum |
| Common Name | Giant Celery Root; Celeriac; Knob Celery |
| Plant Family | Apiaceae |
| Plant Type | Edible root vegetable, generally grown as an annual crop |
| Seed Type | Vegetable seeds |
| Edible Part | Enlarged, swollen root base |
| Root Color | Brownish or tan exterior with creamy-white flesh |
| Foliage Color | Green |
| Flavor | Mild, earthy, celery-like flavor |
| Growing Season | Cool season |
| Sunlight | Full sun to light partial shade |
| Soil Requirements | Fertile, loose, moisture-retentive, well-drained soil |
| Soil Moisture | Consistently moist without prolonged waterlogging |
| Germination Temperature | Approximately 21–24°C for many growing guides; variety-specific conditions may vary |
| Germination Time | Typically 14–21 days under suitable conditions; germination may be slower |
| Seed Starting | Start indoors in seed trays or small pots; sow seeds near the soil surface |
| Plant Spacing | Approximately 30 cm between plants, with adequate space between rows |
| Days to Maturity | Approximately 100–180 days, depending on variety and growing conditions |
| Harvest Method | Loosen the soil and carefully lift mature roots |
Giant Celery Root is a useful addition to a home vegetable garden, producing an edible root with a distinctive celery-like flavor. With early seed starting, fertile soil, consistent moisture, and sufficient growing time, celeriac can provide a versatile harvest for soups, salads, roasted dishes, and other recipes. Choose a suitable growing location and follow the instructions supplied for your particular seed variety.
Learn how to germinate Giant Celery Root seeds, encourage root development, and determine when your celeriac crop is ready to harvest.
Sow celeriac seeds on the surface of moist seed-starting compost and press them gently into place. Avoid covering them with a thick layer of soil because light helps germination. Maintain suitable warmth and consistent moisture, and allow approximately 14–21 days for seedlings to emerge under favorable conditions.
Small roots can result from insufficient growing time, irregular watering, crowded plants, or poor soil fertility. Grow celeriac in loose, fertile soil, maintain even moisture, and allow adequate space between plants. Consistent growth throughout the season helps the swollen root develop properly.
Celeriac is generally harvested when its swollen root reaches a useful size, often around 100–180 days after sowing depending on the variety and climate. Gently loosen the soil and lift the root rather than pulling forcefully on the foliage. Check your seed supplier's maturity information for a more precise harvest estimate.