How to Grow Radish Icicle
Radish Icicle
Raphanus sativus var. longipinnatus
vegetableIcicle radishes are slender, elongated white radishes with a crisp, mild flavor and tender texture. They grow 3-4 inches long with a smooth white skin and are less peppery than round red varieties. This heirloom variety is prized for fresh eating, salads, and pickling.
Growing Conditions
Soil
Growing Zones
Find your zone →Grows in zones 2-10; thrives in cool seasons spring and fall
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Growth Stages
Germination
3-7 daysSeed sprouts and first cotyledons (seed leaves) emerge
Keep soil consistently moist. Seeds germinate in 3-7 days at optimal 65-75°F temperatures.
Seedling
7-10 daysFirst true leaves appear; seedlings develop 2-4 leaves
Thin seedlings to 2 inches apart when they have 2-3 true leaves. Remove crowded seedlings to prevent competition.
Root Development
10-15 daysElongated white root begins forming underground; foliage expands
Maintain steady moisture and consistent temperatures. Avoid nitrogen-heavy fertilizers that encourage leafy growth over root development.
Maturation
5-8 daysRadish reaches 3-4 inches long with white skin; roots become crisp and tender
Continue regular watering. Check size by gently pushing away soil at the top of root. Do not let radishes become oversized or they become woody and bitter.
Harvest
Harvest window 25-30 daysMature radishes ready for pulling; peak tenderness and crispness achieved
Harvest immediately when radishes reach desired size. Do not leave in ground too long or they become pithy and lose quality.
Common Pests
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Use floating row covers; dust with neem oil or kaolin clay; plant near nasturtiums as trap crop
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Apply diatomaceous earth; cover with row cloth; rotate crops; use beneficial nematodes
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Spray with strong water stream; use insecticidal soap; introduce ladybugs
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Use Bt (Bacillus thuringiensis); hand-pick; use row covers
Uses
Fresh salads and slicing
CulinaryIcicle radishes are prized for their mild, crisp flavor and tender texture in fresh salads, slaws, and vegetable platters. Their elongated shape makes them ideal for slicing thin rounds. [source]
Pickling and preserving
CulinaryThe firm white flesh holds up well to pickling and fermentation, producing tangy, crunchy condiments. They are popular in Asian pickled vegetable preparations. [source]
Raw vegetable snacks
CulinaryIcicle radishes are crisp and mildly peppery when raw, making them excellent for vegetable crudités with dips or eaten fresh as a snack. [source]
Root crop succession planting
HouseholdFast maturation (25-30 days) makes Icicle radishes ideal for succession planting every 2-3 weeks for continuous spring and fall harvests. They can be intercropped with slower-growing vegetables. [source]
Digestive and antimicrobial properties
MedicinalRadishes contain sulfur compounds with potential digestive benefits and antimicrobial properties. Traditionally used in herbal medicine to support digestion and respiratory health. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest Icicle radishes 25-30 days after planting when they reach 3-4 inches long and about 0.5 inches in diameter. Pull gently from the soil; if roots break, loosen soil first with a fork. For best flavor and crispness, harvest in early morning. Radishes taste sweetest and crispest when harvested at peak maturity; leaving them in the ground longer causes them to become pithy, woody, and increasingly peppery. Store unwashed in refrigerator in plastic bags for up to 3 weeks; remove greens if storing long-term.
Fun Facts
- 🌱 Icicle radishes are an heirloom variety that originated in Europe and Asia, prized since the 1600s for their elegant long shape and mild flavor compared to round varieties.
- 🌱 Radish seeds germinate remarkably quickly—often sprouting within 3-7 days—making them an excellent first vegetable for beginning gardeners and children to grow.
- 🌱 The entire Icicle radish plant is edible: the roots are crisp vegetables, while the tender young greens can be used in salads or cooked like spinach.
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