Sparkler White radish freshly pulled in a sunny garden

How to Grow Sparkler White Radishes From Seed

By Maxim Kaufman — Founder & CEO, Organo Republic

Updated July 2026

Sparkler White is a cheerful, round radish with bright scarlet skin that fades to a clean white base, giving it a two-tone, sparkler-like look. The flesh is crisp, white, and mild, and the roots mature quickly in about 25 days. Compact and reliable, Sparkler is a classic salad radish that adds a pop of color to the plate. It is easy to grow and best enjoyed young and fresh.

This is the quick guide to Sparkler White. For the full step-by-step on starting seeds, sowing, feeding, and troubleshooting radishes, see our complete guide to growing radishes from seed.

Quick start

Direct-sow Sparkler White seeds half an inch deep and one inch apart in cool spring or fall soil. Thin seedlings to about 2 inches apart and keep the soil evenly moist. Harvest the round red-and-white roots at about 25 days, once they reach an inch across, for the crispest, mildest flesh.

Best tip

Sparkler White is quick and colorful, but like all fast salad radishes it should be pulled young before it turns hot and pithy. Sow it in the cool weather of spring and fall, keep the soil consistently moist so it never stalls, and thin early. In hot-summer regions, avoid midsummer sowings and grow it as a spring and fall crop.

At a glance

Botanical nameRaphanus sativus

Plant typeCool-season root vegetable (annual)

USDA zones2 to 11 (grown as a cool-season annual)

SunFull sun to part shade (6+ hours)

Days to maturityabout 25 days

Height6 to 8 inches (tops)

Spacing1 inch, then thin to 2 to 6 inches apart

WaterEven and consistent; keep soil evenly moist

Uses

Sparkler White is made for fresh eating and pretty plates. Its bright scarlet-and-white rounds slice beautifully into salads and shine on a crudite platter. Serve them whole with butter and flaky salt, or add crisp slices to tacos, sandwiches, and grain bowls. Quick-pickle a jar to keep their mild, peppery crunch ready all week.

Frequently asked questions

How long does Sparkler White radish take to grow?

Sparkler matures quickly, in about 25 days from sowing, making it a great choice for fast spring and fall crops.

What does a Sparkler White radish look like and taste like?

It forms round roots about one inch across with bright scarlet-red tops fading to a white base, and crisp white flesh. The flavor is mild and lightly peppery.

What is Sparkler White radish best used for?

Its bright two-tone color makes it a standout in salads and on vegetable trays. Slice it raw or serve whole radishes with butter and salt.

Any tips for growing Sparkler White radish?

Sow in cool spring and fall weather, thin to about 2 inches apart, and keep the soil evenly moist. Harvest as soon as the roots reach an inch across so they stay crisp and mild.

Ready to grow your own? Sparkler White seeds give you colorful two-tone salad radishes in about 25 days. For the full step-by-step, see our complete radish growing guide linked at the top of this page.

Sparkler Radish Seeds – Non-GMO HeirloomHeirloom, non-GMOHeirloom Sparkler White radish — round roots with a bright scarlet top and white base.

Price$4.99

View product

Want more radishes? These value packs pair Sparkler White with other varieties:

By Maxim Kaufman — Founder & CEO, Organo Republic

Maxim founded Organo Republic in 2017 and personally selects, tests, and grows the heirloom, non-GMO varieties the company offers. Under his leadership, Organo Republic was named Agri Business Review’s Top Non-GMO Seed Variety Solution 2026.