VegetableRadish
White Icicle Radish
White Radish
White Icicle Radish is a heirloom vegetable that has graced American gardens since the late 1800s, bringing a touch of history to your harvest. These slender, carrot-shaped roots grow 5 inches long and mature in just 20-29 days, making them one of the fastest crops you can plant. Unlike their peppery cousins, White Icicles offer a mild, delicate flavor that appeals to gardeners seeking subtlety over heat. They thrive in full sun across hardiness zones 3-10 and handle cooler temperatures with ease, making them a reliable choice for spring and fall gardening.
Photo © True Leaf Market(https://www.trueleafmarket.com/products/radish-white-icicle-seeds)
Growing Conditions
USDA Zone
3-10
Sunlight
Full Sun
Preferred Temp50-75°F
Growth Stats
PeriodAnnual
TypeRoot
Spacing
2-3 inches apart
Plant Profile
Sunlight
Full Sun
Water
—
Zones
3-10
Size
?in H x ?in W
Growth
Annual
Care
Moderate
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Highlights
White Icicles arrived in America's seed catalogs over 140 years ago and remain a gardener's secret for rapid harvests. Their slender profile and mild taste set them apart from bulkier daikon varieties, while their shorter growing season suits gardeners in cooler climates beautifully. Rich in vitamin C, magnesium, and iron, these roots were valued in ancient Chinese medicine for digestive support and continue to deliver serious nutrition in every crisp bite.
Common Uses
These radishes shine in fresh preparations where their mild, crisp texture can take center stage. Slice them thin for salads, serve alongside good butter and salt as a simple appetizer, or pickle them whole for a bright, crunchy condiment. Their delicate flavor makes them approachable for those intimidated by sharper radish varieties, and their firm texture holds up beautifully in slaws and as a garnish for soups.
Growing Timeline
First Bloom
N/a
First Harvest
Early Spring
Last Harvest
Late Fall
Care Instructions
Direct Sow
Direct sow White Icicle Radish seeds 2 inches apart in full sun, pressing them just into the soil surface. Radishes germinate quickly in cool soil (50-70°F ideally) and do not transplant well, so direct sowing is the preferred method. Plant in early spring as soon as soil can be worked, or in late summer for fall harvest.
Harvesting
White Icicle Radishes are ready to harvest 20-29 days after planting, though some sources suggest they may take up to 35 days. Check roots by gently uncovering the soil at the shoulder; they're ready when they reach about 1/2 inch in diameter and 5 inches long. Pull radishes when they reach this tender stage; allowing them to grow too large makes them woody and pithy. In cooler weather, they hold their quality in the ground for several days after reaching maturity, but harvest before the first hard freeze.
Growing Calendar
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Companion Planting
Ecology & Traits
Edible
Scientific Classification
Raphanus L.
Family
Brassicaceae
Genus
Raphanus
History & Origin
“White Icicle Radish has grown in American gardens continuously since the late 1800s, establishing itself as a trusted heirloom long before modern seed catalogs standardized vegetable breeding. Its origins trace to Asian radish traditions, particularly daikon lineage, though American growers developed this variety to be slimmer and faster maturing than its bulky cousins. This adaptation speaks to the ingenuity of 19th-century seed savers who recognized that a compact, quick-growing radish would serve home gardeners better than massive storage varieties. The variety has persisted through generations of seed saving, passed hand to hand among gardeners who valued its reliable performance and gentle flavor.”