Rosemary mint (Poliomintha longiflora) is a bushy perennial native to Mexico that brings ornamental charm and culinary punch to warm-climate gardens. Growing 3 to 4 feet tall and wide, this square-stemmed plant produces smooth, shiny, semi-evergreen leaves with a distinctly stronger flavor than oregano, making it a prized culinary herb in southwestern U.S. gardens and beyond. Hardy in zones 8 through 10, it thrives in full sun and tolerates both drought and part shade, flowering with slender lavender-pink tubular blooms from August through September. North of zone 8, you can grow it in containers and bring it indoors for winter in a sunny window.
Partial Sun
Moderate
8-10
48in H x 48in W
—
High
Hover over chart points for details
The leaves deliver a powerfully aromatic herb flavor that surpasses oregano in intensity, rewarding you with a harvest far more flavorful than typical culinary mints. Silvery-green semi-evergreen foliage stays attractive year-round in warm zones, while showy lavender-pink flowers bloom late into fall, drawing hummingbirds and other pollinators to the garden. Drought tolerance and low maintenance make it nearly effortless once established, thriving even in hot, humid climates where other herbs struggle, and it harbors no serious pest or disease problems.
Use the leaves fresh or dried as a culinary herb, adding them to soups, stews, sauces, and meat dishes where a stronger oregano-like flavor enhances the final dish. The aromatic foliage also works beautifully as an ornamental perennial in xeriscape gardens, herb borders, and containers, where the showy lavender-pink flowers attract hummingbirds throughout late summer and early fall.
No timeline data available yet for this variety.
Transplant seedlings or container plants outdoors after the last spring frost in your zone, spacing plants 36 to 48 inches apart to allow for their mature spread. Choose a location with full sun to partial shade and ensure soil drains well.
Pinch or cut fresh leaves anytime during the growing season, harvesting from the top of stems to encourage bushier growth. For drying, harvest leaves in the morning after dew dries but before heat sets in, selecting vigorous growth tips. Cut stems about one-third of the way down the plant, bundle loosely, and hang dry in a warm, airy location out of direct sunlight until leaves crumble easily between your fingers.
Prune lightly in late winter to shape the plant and encourage branching, cutting back any frost-damaged stems. Deadhead spent flowers throughout the bloom season (August through September) to keep the plant flowering longer and maintain a tidy appearance.
Enter your ZIP code to see a personalized growing calendar for this plant.
“Native to Mexico, Poliomintha longiflora has been used as a culinary herb by regional cooks for generations, traditionally prepared much like oregano but with a more concentrated, robust flavor profile. Its journey into wider cultivation reflects growing interest in native southwestern plants that thrive in challenging climates without supplemental irrigation or intensive care.”