This species was first discovered growing in Montevideo, Uruguay, thus its botanical name. It has also acquired the unflattering nickname, polecat geranium, because the aroma of its leaves repels some people. Grow it in full sun. Once established, it needs only occasional watering. Since trailing lantana is not a heavy feeder, a light application of fertilizer in the spring usually suffices. Too much fertilizer can hinder flowering and may result in greater susceptibility to diseases. The plant boasts interesting color patterns, with the foliage of some varieties turning red or purple in winter, and the older, outer blooms in a flower cluster taking on a different hue from the younger, inner ones. Notable cultivars of trailing lantana include "Malan's Gold," which features green and yellow foliage and rose-colored blooms, and "Lavender Swirl," with white flowers that deepen to pale lavender and then a richer lavender.
Horticulturists from Texas A&M University choose "New Gold" as the best of the weeping lantana varieties. It remains low to the ground but blooms profusely. As "New Gold" does not produce berries, the plant will be a continuous beauty rather than a pest that spawns unwelcome seedlings. The drought-resistant plant needs a sunny location to bear its bright yellow blossoms. Flowering continues even in the hottest weather. Although a tender perennial, it works best as a warm-season annual, replanted every spring.
Another vigorous bloomer, "Alba," also known as "Momma," produces lightly fragrant white flowers with yellow throats. A tough, spreading ground cover, the plant can rebound from temperatures approaching 10 degrees Fahrenheit. In cold weather, "Alba's" foliage develops an unusual blackish-purple cast. Like "New Gold," it is drought-resistant and tolerant of browsing deer. "Alba" sports hairy, dark green, strongly scented foliage that contrasts attractively with the white blooms.
The nectar-heavy flowers of trailing lantana lure bees, butterflies, moths and hummingbirds. Most commonly used as bedding plants, weeping varieties also excel in hanging baskets. Plant it around the edges of mixed arrangements in containers to dangle over the sides. Since the plant covers the ground quickly, use it as a filler in young garden before larger plants mature. Planted on an embankment, trailing lantana will help control erosion. Because of its heat tolerance, lantana is an excellent choice to grow along streets and driveways. Many varieties of lantana have berries that are toxic to humans, pets and livestock if ingested. To avoid this hazard, plant fruitless hybrids like "New Gold" or "Alba." Even handling the plants, however, can cause allergic reactions or skin irritation.