Organic ‘Mars’ celeriac (Apium graveolens) from the seed company Gaia, a vigorous hybrid variety with broad and stable roots

The ‘Mars’ celeriac forms a large, upright, and robust plant with well-spaced, dark green foliage , which limits soil splash and reduces the risk of foliar diseases. The roots are large, regular, and well-formed , with dense, stable flesh , even at large sizes. The interior remains homogeneous, without hollows or coarse fibers, offering a clean, sweet, and aromatic celeriac flavor .

Selected for its robustness in open field cultivation , this hybrid variety is distinguished by its tolerance to wet conditions and its good resistance to septoria leaf blotch , aided by its upright growth habit. Reliable and consistent, it is suitable for both demanding gardeners and market gardeners seeking a root of consistent quality that is easy to prepare in the kitchen.

Companion plants: Brassicaceae, Alliums, Tomato, Lettuce, Spinach, Peas, Beans
Negative plants: Corn, Cucumber, Squash, Pumpkin

Spread/Carry: Upright, vigorous
Plant height: 45 to 60 cm
Quantity per packet: Approximately 50 seeds
Certification: Certified organic
Special features: Hybrid variety for open fields, large and regular roots, stable flesh even at large sizes, upright growth habit limiting disease

Leaf color: Dark green
Texture/flavor: Dense, white flesh, pronounced celery flavor
Cold tolerance: Down to -7C

Farming method

Start seeds indoors 10 to 12 weeks before planting out , as celeriac is slow to establish. Transplanting is highly recommended and can be done 2 to 3 weeks before the last frost , in rich, deep, well-drained soil . Sow at a depth of 1.2 cm , then transplant, spacing plants 15 to 25 cm apart and rows 60 to 90 cm apart .

Celeriac prefers full sun (level 3) and regular watering (level 2) . Avoid prolonged drops in temperature at the beginning of cultivation, as the plant may bolt (go to seed) if temperatures fall below 12C during the day and 4C at night .

Harvesting and preservation

Before harvesting, tying the leaves together creates a blanching effect , improving the color and tenderness of the flesh. Harvest when fully mature, approximately 95 days after sowing , and then cool immediately after lifting to preserve quality. Store at 1 to 2C , with a humidity of approximately 95% , for up to 2 weeks .

Usage ideas

Soups and broths
Pures and gratins
Oven-roasted vegetables
Cubes for stews
Aromatic winter cuisine

The ‘Mars’ celeriac is distinguished by its vigor , the stability of its large roots , and its reliability in open fields , offering a robust and high-performing variety for autumn harvests. A sure choice for gardeners seeking consistency, hardiness, and culinary quality.