Sisymbrium luteum is a fragrant mustard family perennial that brings bright yellow flowers and edible leaves to gardens in hardiness zones 4 through 8. This erect, branching herbaceous plant grows 2 to 4 feet tall and produces luminous racemes of blooms from late spring through early summer, with occasional flushes throughout the season. Once classified as Hesperis lutea, this species thrives in full sun with moderate water and minimal maintenance, making it an underutilized addition to both vegetable and ornamental gardens.
Full Sun
Moderate
4-8
48in H x 36in W
—
Low
Hover over chart points for details
Yellow flowers perfume the air in late spring and early summer with their fragrant blooms held in elegant racemes. The plant's name traces back to ancient Greek, where sisymbrion referred to various mustard-family plants, a lineage reflected in its vigorous growth and low-maintenance nature. Growing 2 to 4 feet tall, it fills vertical space efficiently while tolerating light shade, and it encounters no serious insect or disease pressures in most gardens.
As an edible perennial in the brassicaceae family, Sisymbrium luteum offers both visual appeal and culinary potential. The leaves can be harvested and used as a peppery green in the manner of other mustard-family vegetables, while the fragrant flowers contribute color and subtle flavor to salads and garnishes.
No timeline data available yet for this variety.
Harvest leaves for culinary use by pinching or cutting the tender growing tips and young foliage, beginning once the plant is well established. For flower harvesting, cut racemes when they are fully open and fragrant, ideally in the morning after dew has dried. Both leaves and flowers can be used fresh.
Remove spent flower racemes to encourage sporadic rebloom throughout the summer months. Cut back the entire plant in late fall or early spring to maintain a compact form and promote vigorous branching, especially if plants become leggy or overgrown over several seasons.
Enter your ZIP code to see a personalized growing calendar for this plant.
“Sisymbrium luteum carries botanical history in its nomenclature. The genus name derives from sisymbrion, an old Greek designation for mustard-family plants, while the specific epithet luteum simply means yellow in Latin. The plant was formerly known as and remains synonymous with Hesperis lutea, a name shift reflecting evolving botanical classification over time.”