Plant it in wide rows or use it as a temporary edging. Fertilize with fish emulsion every 3 weeks, especially if the seedlings aren't growing quickly enough. You can also grow arugula during winter in a cold frame or indoor light garden. Sow seed outdoors in early through late spring and in late summer and fall. Young seedlings may survive winter.
Flea beetles can gnaw small holes in the foliage.
Cover with floating row covers to keep them away. Use it in salads and stir-fries.