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New! 90-100 days Disease-resistant and adaptable to varied conditions, Mars produces large, upright and vigorous plants with dark green foliage and large, smooth, uniform, cream-white fleshy roots. Best harvested when 3” to 5” in circumference, Mars has a mild, earthy, celery-like flavor. (OP)
One packet of about 200 seeds
** This item will be available to ship in late January 2026 **
Celeriac is a raggedy, bulbous Celery cousin that is grown for its root, hence its moniker, Celery Root. It is a bit challenging to grow, but once you've bitten this unforbidden fruit, you'll know it's well worth the effort. Raise as transplants 10 to 12 weeks before setting out after all danger of frost has passed when temperatures are reliably above 55°F. Ravenous Celeriac needs rich, loamy well-fed soil and regular watering. Harvest with a spade before a heavy frost, store it in the fridge or cool cellar and enjoy it for up to 8 months.
Celeriac Sowing Instructions
Planting Depth:1/16” Row Spacing:18” Plant Spacing:12” Days to Germination:10-28 days Germination Temperature:65°-75°F
Challenging to grow, yet if you have savored its
tonic sweetness, you know it is worth the trouble!
Raise as transplants 10 to 12 weeks before setting
out. Start early in order to produce a large root
before a heavy frost in the fall. Sow seed shallowly,
germinate in strong light, providing warmth
(preferably 65°-75°F) and good air circulation. To
ensure good germination, keep soil moist and pamper
until seedlings emerge. Gradually accustom
plants to the outdoors and plant in the garden after
danger of frost has passed or when temperatures are
consistently above 55°F. Celeriac has a ravenous
appetite, growing best in rich, loamy, well-fed soil.
Amend with lots of compost, well-rotted manure
and balanced organic fertilizer. Regular watering
will provide the ample moisture Celeriac needs to
grow. Use a spade to harvest the large bulb-like
root when baseball size, before a heavy frost.
Big and Beautiful
In Europe, Celeriac growers remove the lowest shoots on the plant, and let the central, upright stems develop fully. This is said to produce larger roots and also smoother, rounder ones without extra, knobby, side roots.
Celeriac is a raggedy, bulbous Celery cousin that is grown for its root, hence its moniker, Celery Root. It is a bit challenging to grow, but once you've bitten this unforbidden fruit, you'll know it's well worth the effort. Raise as transplants 10 to 12 weeks before setting out after all danger of frost has passed when temperatures are reliably above 55°F. Ravenous Celeriac needs rich, loamy well-fed soil and regular watering. Harvest with a spade before a heavy frost, store it in the fridge or cool cellar and enjoy it for up to 8 months.
Average seed life: 3 years.
Celeriac Sowing Instructions
Planting Depth:1/16” Row Spacing:18” Plant Spacing:12” Days to Germination:10-28 days Germination Temperature:65°-75°F
Challenging to grow, yet if you have savored its
tonic sweetness, you know it is worth the trouble!
Raise as transplants 10 to 12 weeks before setting
out. Start early in order to produce a large root
before a heavy frost in the fall. Sow seed shallowly,
germinate in strong light, providing warmth
(preferably 65°-75°F) and good air circulation. To
ensure good germination, keep soil moist and pamper
until seedlings emerge. Gradually accustom
plants to the outdoors and plant in the garden after
danger of frost has passed or when temperatures are
consistently above 55°F. Celeriac has a ravenous
appetite, growing best in rich, loamy, well-fed soil.
Amend with lots of compost, well-rotted manure
and balanced organic fertilizer. Regular watering
will provide the ample moisture Celeriac needs to
grow. Use a spade to harvest the large bulb-like
root when baseball size, before a heavy frost.
Big and Beautiful
In Europe, Celeriac growers remove the lowest shoots on the plant, and let the central, upright stems develop fully. This is said to produce larger roots and also smoother, rounder ones without extra, knobby, side roots.
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