White Rocket

White Rocket (Diplotaxis erucoides) is a fast-growing annual leaf vegetable from the Brassicaceae family, native to the West Mediterranean. Its leaves deliver an intense, wasabi-like heat and pungency that is sharper and more aromatic than common rocket. It produces small white cross-shaped flowers that are also edible. The plant tolerates light frost and thrives in well-drained soils, though it adapts well to heavier clay ground.

Growing

Direct sow seeds 0.5 cm deep as soon as soil reaches 5 °C. Space plants 15 cm apart in rows. For a continuous harvest, make successive sowings once nights stay above 2 °C. Seeds germinate in 5–10 days. No indoor start is needed; sow directly into beds or containers.

Care

Water regularly but avoid waterlogging — good drainage is essential. Feed sparingly; excess nitrogen reduces leaf pungency. Remove flower stalks promptly to extend the leaf harvest. The plant is largely low-maintenance and self-seeds freely if a few plants are left to flower.

Harvest

Begin harvesting outer leaves once plants reach 10–15 cm tall, around 30 days from sowing. Use scissors to cut leaves just above soil level for a cut-and-come-again harvest. Pick young leaves for best flavour; flowers are also edible and ornamental. Harvest before plants bolt to retain peak wasabi-like heat.

In the kitchen

Use raw leaves and flowers in salads, sushi accompaniments, or as a bold garnish. The flavour compounds are volatile — cooking for more than a second destroys the characteristic pungency, so add leaves only at the very last moment or use them entirely raw. Pairs well with soy, sesame, and delicate fish.

Storing

Store unwashed leaves loosely wrapped in a damp cloth inside an airtight container in the refrigerator for up to 2–3 days. The pungent aroma fades quickly after harvest, so use as fresh as possible. Do not freeze.