Which Radish Should You Plant? 12 Types Compared by Size, Flavor, and Season
Cherry Belle matures in 22 days. Watermelon radish needs fall planting. Here’s how to match all 12 radish types to your season and garden.
Cherry Belle is the radish everyone grows. It matures in 22 days, it’s in every seed rack, and it tastes fine. But it only works four months out of twelve — plant it in July and you’ll get a bolt without a root. Plant a daikon in April and the same thing happens, for the opposite reason.
The twelve types of radishes worth growing occupy different niches in the calendar. Some sprint from seed to salad in three weeks. Others need the shortening days of autumn to trigger root formation at all. Get the category right, and radishes become one of the easiest vegetables you can grow. Get it wrong, and you get flowers.
This guide organises all twelve types by season and purpose, explains what makes each variety behave differently, and ends with a decision framework so you can match a radish to your garden today — not after a botched crop teaches you the hard way.
For full planting timelines and soil prep by zone, see our complete radish growing guide.
The Two-Season Split: Why Your Planting Date Determines Everything
Every radish belongs to one of two biological camps, and the division isn’t arbitrary.
Spring/salad radishes (Cherry Belle, French Breakfast, White Icicle) are bred to sprint. They form roots in 22–30 days during cool, short-day conditions. When temperatures exceed about 75°F or day length stretches past 14 hours, they redirect energy into flowering. The root becomes pithy and the plant bolts. Spring radishes have a hard ceiling: plant them by mid-spring, harvest them before summer arrives.
Winter/Asian radishes (daikon, watermelon radish, Black Spanish) operate under the opposite logic. These cultivars were selected to grow massive roots under cool, shortening autumn days. Plant them in spring and the long summer days trigger their flowering response before the root has time to form. The short-day signal of fall — not cold temperatures, but shortening daylight — tells the plant to store energy in the root rather than bolt. Sow them in late July to early August in Zones 5–7, or August in Zones 8–9, and harvest after the first light frosts.
The pungency connection. A 2022 study published in Plants measured glucosinolate and sugar content across growing seasons. The primary pungent compound, glucoraphasatin, was about 35% more concentrated in autumn-grown radishes (27.18 µmol/g dry weight) than spring-grown ones (20.23 µmol/g). But autumn radishes actually taste milder. Fall crops accumulate more sucrose, glucose, and fructose — and these sugars mask heat perception from glucosinolates. The ratio of pungent compounds to total sugar is what you taste, not the raw glucosinolate level. A well-grown daikon harvested after light frost tastes almost sweet; a spring Cherry Belle left in ground during a warm spell bites back hard.
The practical rule: season determines both root formation and flavor. Neither is negotiable.
Spring/Salad Radishes: 5 Types to Plant Before the Heat Sets In
Sow spring radishes as soon as your soil is workable — roughly when soil temperature reaches 45°F. For most of Zones 5–7, that’s late March to early April. Succession plant every 10–14 days for continuous harvests through May or early June. After that, switch to winter types or specialty crops.
University of Illinois Extension notes that spring radishes left too long in warm soil become hot in taste and woody in texture — so check them daily once they approach their listed maturity date.
1. Cherry Belle — 22 Days
Size: 1-inch globe, bright red. Flavor: Mild, slightly sweet. The quintessential beginner radish and an All-America Selections winner. Cherry Belle’s strength is consistency: it matures fast, tolerates a range of soils, and stays crisp for two to three days after hitting full size before going pithy. If you’ve never grown radishes, start here. Plant in Zones 3–10 in spring or fall.
2. French Breakfast — 28 Days
Size: 2 inches long, cylindrical, red with a white tip. Flavor: Mild, almost buttery. French Breakfast is an open-pollinated heirloom that French market vendors once ate with butter and salt — the flavor supports it. Its key advantage: it handles moderate spring heat better than most early varieties if you keep the soil consistently moist. Illinois Extension explicitly recommends it for late-spring sowing when Cherry Belle would bolt. The RHS ‘French Breakfast 4 Francis’ holds an Award of Garden Merit, a reliable indicator of genuine garden performance.
3. White Icicle — 23–30 Days
Size: 5-inch tapered white root. Flavor: Mild, juicy. White Icicle is the heat-tolerance specialist among spring types. Its elongated shape also works well for gardeners who prefer a less peppery bite — white-fleshed radishes tend toward milder flavors. Harvest when roots reach pencil thickness; they grow fast and the tips taper to a point when ready.
4. Early Scarlet Globe — 20–28 Days
Size: Round, 1–1.5 inches, bright red. Flavor: Crisp, mild. This heirloom is nearly identical to Cherry Belle in performance but open-pollinated — relevant if you save seeds. It’s slightly larger at full maturity and a touch more heat-tolerant than Cherry Belle, making it the better pick for pushing a last spring sowing by a week or two.
5. Sora — 22–24 Days
Size: Round, similar to Cherry Belle. Flavor: Mild, uniform. Sora’s standout trait: it was specifically selected to resist the pithy, hollow texture that develops when spring radishes overstay their welcome in warm soil. If you check your garden weekly rather than daily, Sora gives you a wider harvest window without the penalty of a spongy root.
Spring Radish Quick Comparison
| Variety | Days | Shape | Flavor | Best For |
|---|---|---|---|---|
| Cherry Belle | 22 | 1" globe | Mild, sweet | First-time growers |
| French Breakfast | 28 | 2" cylinder | Mild, buttery | Late-spring sowing |
| White Icicle | 23–30 | 5" tapered | Mild, juicy | Low-heat preference |
| Early Scarlet Globe | 20–28 | 1.5" globe | Crisp, mild | Seed savers |
| Sora | 22–24 | Round | Mild, uniform | Weekly harvesters |
Winter and Asian Radishes: 4 Types That Need Fall Planting
The rule is simple and non-negotiable: sow winter radishes in late summer. In Zones 5–7, plant between July 20 and August 10. In Zone 8, target mid-August. In Zone 9, late August to September. Plant outside this window and the long days of summer trigger the flowering genes before the root has time to swell.
These radishes also need deeper soil than spring types — at least 12 inches of loose, well-drained soil for daikon to develop properly. UF/IFAS Extension recommends consistent irrigation every two to three days to reduce radish scab, a rough-skinned condition caused by irregular watering. The payoff: roots that weigh pounds rather than ounces and store for weeks or months. A light frost actually concentrates sugar in the root — the same mechanism that makes fall carrots sweeter than summer ones.
6. Daikon (Miyashige Variety) — 50–60 Days
Size: 12–18 inches long, white. Flavor: Mild, slightly sweet. Daikon is Japan’s most common vegetable and the workhorse of Asian cuisine. One important distinction US gardeners miss: culinary daikon is not the same as forage or tillage radish. Cover-crop seed sold as “daikon” is typically an oilseed type — stubbier, more branched, and bred for soil work rather than eating. For the kitchen, look specifically for Miyashige, April Cross, or Minowase Summer Cross on the seed packet. Plant in soil prepared to at least 12 inches — compacted subsoil produces forked roots that don’t store well. Once harvested, daikon stores up to eight weeks in the refrigerator at around 32–40°F.
7. Watermelon Radish (Red Meat / Mantanghong) — ~50 Days
Size: 2–4 inches round. Exterior: Pale green-white. Interior: Vivid magenta-pink. Flavor: Sweet, mild. Watermelon radish is the most visually dramatic radish in the garden, and possibly the most misplanted. Its short-day requirement is absolute: a spring sowing almost guarantees bolting before the interior develops. Johnny’s Selected Seeds notes the variety “may bolt to seed from spring sowing” — the caveat is not optional.
Sow in late July to early August. Harvest when roots reach 2–4 inches in diameter. The magenta flesh intensifies with cooler temperatures. At 32°F with high humidity, watermelon radish stores up to 10 weeks — long enough to serve a December dinner from a late-summer crop. Use it sliced thin in salads, quick-pickled, or lightly braised.
8. Black Spanish Round — 50–70 Days
Size: 3–4 inches round. Exterior: Nearly black. Interior: White. Flavor: The most pungent of all radish types. Black Spanish is the storage champion — harvest in late October and it keeps in a cool cellar through winter. Its glucosinolate profile runs higher than other types, and without the sugar-masking effect of sweeter varieties, that heat comes through directly. Traditional herbal medicine attributed bile-stimulating properties to black radish juice, and a 2012 animal study found reduced cholesterol gallstone formation in mice treated with it — but there are no controlled clinical trials in humans, so grow it for flavor and storage, not as a supplement.
9. China Rose — 55–65 Days
Size: Medium-large, oblong. Exterior: Rose-pink. Interior: White. Flavor: Milder than Black Spanish. China Rose is the bridge type: slower and larger than spring radishes but far less aggressively pungent than Black Spanish. RHS recommends it as a winter type with “medium to large oblong, tasty roots.” It falls in the same late-July-to-August sowing window and stores well through winter — a good entry point if Black Spanish’s sharpness puts you off.
Winter Radish Quick Comparison
| Variety | Days | Size | Flavor | Key Note |
|---|---|---|---|---|
| Daikon (Miyashige) | 50–60 | 12–18" long | Mild, sweet | Buy culinary variety; 12"+ soil depth |
| Watermelon (Red Meat) | ~50 | 2–4" globe | Sweet, mild | Fall sow only; vivid magenta interior |
| Black Spanish Round | 50–70 | 3–4" globe | Sharp, pungent | Best storage; keeps through winter |
| China Rose | 55–65 | Medium oblong | Mild-medium | Good entry-level storage type |
Three Specialty Radishes Worth Knowing
10. Dragon’s Tail (Rat-Tail Radish) — 50 Days
Dragon’s Tail solves a problem every spring gardener hits: what radish can you grow in summer? The answer is this one — because you don’t harvest the root. You grow Dragon’s Tail to bolt. Long summer days trigger flowering, and instead of roots, you harvest the seed pods: crunchy, 3–6-inch pods that taste like a spicy snap pea. Eat them raw, stir-fried, or pickled. The plant is also ornamental, with trailing purple-white flower clusters. Sow in late spring for a July–August pod harvest.
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→ View My Garden CalendarIf you grow tomatoes, Dragon’s Tail works as a companion plant — its pungent volatile compounds help deter flea beetles, a common pest on both crops. See our tomato growing guide for building a pest-resistant vegetable bed.
11. Easter Egg Blend — 25 Days
Easter Egg is not a single variety — it’s a marketed blend of globe-shaped radishes in red, purple, white, and pink, packaged together for visual variety. Spring sow only. The radishes taste like typical globe types (mild to medium peppery), but the color mix makes a salad bowl stand out. Best for household gardens where presentation matters, and excellent for getting children interested in vegetable growing. At 25 days, the harvest happens before their attention moves on.
12. Amethyst — 25 Days
Amethyst is a purple-skinned, white-fleshed spring radish that holds an RHS Award of Garden Merit. Its practical advantage: it’s notably slower to turn woody or pithy compared to standard red globe radishes — the RHS specifically cites this trait. For gardeners who harvest on weekends rather than checking daily, Amethyst gives an extended window without sacrificing quality. Pair it with French Breakfast for a two-color spring harvest from a single planting.
Radishes deter aphids and flea beetles in herb gardens through pungent volatile compounds. If you grow basil alongside vegetables, interplanting fast-maturing radishes in the gaps reduces pest pressure without sprays. Our basil growing guide covers spacing and companion planting strategy.
All 12 Types at a Glance
| Type | Days | Size | Season | Flavor | Best For |
|---|---|---|---|---|---|
| Cherry Belle | 22 | 1" globe | Spring/Fall | Mild, sweet | Beginners |
| French Breakfast | 28 | 2" cylinder | Spring | Mild, buttery | Late-spring/heat |
| White Icicle | 23–30 | 5" tapered | Spring | Mild, juicy | Low-heat preference |
| Early Scarlet Globe | 20–28 | 1.5" globe | Spring/Fall | Crisp, mild | Seed savers |
| Sora | 22–24 | Round | Spring/Fall | Mild, uniform | Weekly harvesters |
| Daikon (Miyashige) | 50–60 | 12–18" long | Fall | Mild, sweet | Asian cuisine, storage |
| Watermelon Radish | ~50 | 2–4" globe | Fall | Sweet, mild | Salads, pickling |
| Black Spanish | 50–70 | 3–4" globe | Fall | Sharp, pungent | Maximum storage |
| China Rose | 55–65 | Medium oblong | Fall | Mild-medium | Beginner storage type |
| Dragon’s Tail | 50 | Pods 3–6" | Summer | Spicy, crunchy | Summer harvest gap |
| Easter Egg Blend | 25 | Small globe | Spring | Mixed mild | Visual / kids gardens |
| Amethyst | 25 | Round | Spring/Fall | Mild | Weekend harvesters |
Which Radish Should You Plant?
First-time grower: Cherry Belle. The most forgiving, fastest, and most widely available radish there is. Plant in March–April (Zones 5–7) or September–October for a fall crop.
Want a spring radish past May: French Breakfast with consistent watering, or Sora for a wider harvest window without the pithy penalty.
Want summer production: Dragon’s Tail — the only radish that thrives in full summer. Let it bolt and harvest the pods.
Want the culinary wow factor: Watermelon radish. Sow late July–August, harvest in October. Slice thin and the magenta interior does the work on any plate.
Want maximum storage: Black Spanish stores all winter and needs nothing beyond a cool, dark space. Grow it alongside daikon for a pungent-and-mild storage mix.
Want the mildest radish: Daikon (Miyashige). Its lower glucosinolate-to-sugar ratio means almost no bite when freshly harvested after light frost.
Garden on weekends only: Amethyst (spring) or Sora (spring). Both resist going woody or pithy past their maturity date better than standard globe types.
Children in the garden: Easter Egg blend. The color mix gets kids excited, and at 25 days, the harvest comes before their attention moves on.
FAQ
Can I grow radishes in summer?
Globe types — Cherry Belle, French Breakfast, Sora — bolt quickly in summer heat and long days. The only radish suited to summer growing is Dragon’s Tail, which you grow specifically for its spicy seed pods rather than the root. For everything else, wait for the late-July-to-August window to start your fall winter-radish crop.
Why did my radishes bolt without forming roots?
Two causes. Spring types bolt when temperatures exceed 75°F or day length passes 14 hours — plant earlier next season. Winter types (daikon, watermelon radish, Black Spanish) bolt when sown in spring or early summer because long days trigger their flowering genes before root swell begins. The fix for winter types: never sow before late July. Getting the season right matters more than soil prep.
Do different radish types really taste that different?
Yes, significantly. Cherry Belle and Amethyst are genuinely mild — most people who say they dislike radishes haven’t tried a fresh, in-season globe type. Watermelon radish is almost sweet. Black Spanish is sharp enough to clear sinuses. The glucosinolate-to-sugar ratio separates them, and that ratio changes with both variety and season — a summer-stressed Cherry Belle is far hotter than one grown in cool spring soil.
Sources
University of Minnesota Extension — Growing Radishes in Home Gardens
UF/IFAS Extension — Daikon Radish Cultivation Guide for Florida (HS1370)
