London Rocket prefers consistently moist soil, especially during its initial growth phases. Water regularly to maintain even moisture, but avoid waterlogged conditions which can lead to root rot.

Allow the top 2-3 cm of soil to dry slightly between waterings once the plant is established.

Pruning is generally not required for London Rocket, as it is an annual or biennial that completes its life cycle relatively quickly. If desired, you can deadhead spent flower stalks to prevent self-seeding or to maintain a tidier appearance, especially if grown in a garden setting.

London Rocket is easily grown from seed. Sow seeds directly into the garden bed in early spring or late autumn. They germinate readily in cool, moist soil.

For earlier blooms, start seeds indoors 4-6 weeks before the last expected frost, transplanting carefully.

Repotting is typically not necessary for London Rocket, as it is often grown as an annual or biennial from seed sown directly into the ground. If growing in containers, repotting would only be considered if the plant becomes root-bound, which is unlikely given its rapid growth and relatively short lifespan.