Sparkler Radish, Heirloom Seeds

Sparkler Radish, Heirloom Seeds — The Classic Scarlet-and-White Salad Radish With Sweet, Juicy Flesh

Sparkler (Raphanus sativus) is the quintessential salad radish — bright scarlet skin that fades to crisp white on the lower third of its round to oval bulb, with sweet, juicy flesh and a snappy, satisfying flavor. Medium tops are perfect for both home and market gardens. Rich in ascorbic acid, folic acid, and potassium, Sparkler is as nutritious as it is beautiful. One cup of sliced radish provides approximately 20 calories — a guilt-free crunch in every bite. Ready in 25 days.

Why Grow Sparkler?

• Classic scarlet-and-white two-tone color — scarlet skin fading to white on the lower third
• Sweet, juicy, snappy flavor — the quintessential salad radish
• Nutritious — rich in ascorbic acid, folic acid, potassium, B6, riboflavin, magnesium, copper, and calcium
• Perfect for home and market gardens — medium tops, uniform and attractive
• Ready in 25 days — one of the fastest crops in the garden
• Open-pollinated heirloom — save seed year after year

Growing Notes

Direct sow outdoors in early spring or fall — radishes prefer cool weather and bolt quickly in heat. Sow seeds ½ inch deep, 1 inch apart, in rows 6–8 inches apart. Thin to 2 inches. Full sun. Keep soil consistently moist. Harvest at 25 days when roots reach ¾–1¼ inches. Succession sow every 1–2 weeks for continuous harvest.

Days to maturity: 25 days
Root size: ¾–1¼ inches, round to oval
Packet size: 2.6 g / 300+ seeds
Type: Heirloom, Open-Pollinated, Annual
Spacing: 16 per sq ft
Sun: Full sun
USDA Zones: 3–12