Free garden planner — save plants, plan beds, and get sowing reminders for your spot.
Sign up freePotentially invasive
This species can spread aggressively. Check local guidance before planting, and avoid letting it escape into the wild.
Raphanus sativus var. oleiformis
Watermelon radish is a variety of radish (Raphanus sativus) characterized by its distinctive pink or red interior flesh with white or pale outer rings, resembling a watermelon when sliced. It is an edible root vegetable that matures relatively quickly and is grown for its crisp, mildly spicy roots used in salads and culinary applications.
A fellow Brassicaceae — similar growing habits to Watermelon radish
Direct-sow Watermelon radish outdoors about 4 weeks before your last frost, keeping seeds in cooler soil (around 10–18 °C). Seeds usually come up in around 3 days. Grow in full sun, spaced about 7 cm apart. Expect to harvest in roughly 25 days.
Watermelon radish seed rarely stays viable beyond 4 years — track what's still worth sowing.
Water: Medium · Height: 30 cm · Soil: Prefers well-drained soil; tolerates a range of soil types from light sandy to medium loam
