Troubleshooting
American Sea Rocket problems — and how to fix them
American Sea Rocket (Cakile edentula) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Transplant failure due to taproot disturbance
The plant produces a long, sensitive taproot very early and strongly resists transplanting. Direct sow in final position; if starting in pots, use deep individual cells and plant out before roots circle.
Cabbage white butterfly caterpillars
As a Brassicaceae member, it attracts Pieris butterfly larvae in summer, which can defoliate seedlings rapidly. Inspect undersides of leaves regularly and remove egg clusters and caterpillars by hand.
Prevent american sea rocket problems before they start
Most american sea rocket issues are care-mismatch, not bad luck. Dial in the basics:
American Sea Rocket problems — FAQ
Why is my american sea rocket transplant failure due to taproot disturbance?
The plant produces a long, sensitive taproot very early and strongly resists transplanting. Direct sow in final position; if starting in pots, use deep individual cells and plant out before roots circle.
Why is my american sea rocket cabbage white butterfly caterpillars?
As a Brassicaceae member, it attracts Pieris butterfly larvae in summer, which can defoliate seedlings rapidly. Inspect undersides of leaves regularly and remove egg clusters and caterpillars by hand.