Zesty and mouthwatering in salads, pesto, and cooking.
Regular annual arugula is milder, more tender, heavier-producing,
but bolts quickly in heat. It excells as a quick crop in cool weather, often producing all winter in zones 8-10.
Sylvetta is perennial, and its deep taproot makes it heat-resistant.
It produces leaves and flowers all summer, and overwinters to zone 5. Sylvetta survives cold winters by going dormant--it loses its leaves like a deciduous tree. New growth will start very early in spring, before the soil is warm enough for seeds to sprout.
Arugula is valuable as a nectar source to draw pest-fighting insects. Let some go to seed in odd corners for bees, beneficials, and butterflies to enjoy. The flowers are edible in salads.