How to Plant, Grow, and Care For ‘Luna’ Hibiscus
Hardy hibiscus shrubs are beautiful garden and landscape elements. The 'Luna' cultivar has some of the biggest and loveliest flowers around. Join gardening expert Melissa Strauss to learn how to grow this lovely hibiscus in your garden.
With their flamboyant flowers,....

hardy hibiscuses are a great way to bring tropical vibes to your cool-climate garden. They have some of the largest flowers of all perennial shrubs, with some blooms as large as dinner plates!
These flowers have garnered longstanding popularity among gardeners and breeders alike. Some of the most lovely are the ‘Luna’ series of hibiscus cultivars. Here’s how to grow them!
What Is ‘Luna’ Hibiscus?
‘Luna,’ which encompasses several plants with different colored flowers in the same group, is a hardy hibiscus. These are similar to their tropical cousins, but you can grow them in far colder climates. Their large blooms and prolific flowering habit make them exceptionally popular as landscaping elements and garden focal points.
This particular series of cultivars has extra-large flowers, especially for a deciduous species. Tropical hibiscus typically produces the biggest blooms, so this one is special and a real treat for those of us living north of a tropical climate zone.
Characteristics
‘Luna’ is a series of the species Hibiscus moscheutos, which also goes by the name swamp rose mallow. The species can reach heights up to seven feet tall, but this cultivar typically tops out around three feet. They have single-petal form flowers and come in lavender, pink, red, rose, white, and combinations of these shades.
The blooming time runs from mid-summer until the first frost knocks them down. The blooms are dinnerplate-sized, up to eight inches across. Each flower lasts for only one day, but it produces so many that they bloom nearly continuously.
In colder climates, it dies back to the ground in winter and re-grows the following spring. The shrub has a naturally pleasing shape, forming a compact mound of dark green, maple-like foliage. Darker varieties have red-tinted leaves and veining. They are slightly coarse-textured and have a silvery wash over the underside.
Native Area
This species of hibiscus grows naturally in marshes, meadows, swamps, and wooded areas in Eastern Canada and the United States. The ‘Luna’ series are hybrids, so they have no real native range, but you can find the parent species from Ontario to Florida.
Planting
The ideal time to plant a ‘Luna’ hibiscus is as soon as the risk of frost has passed and before it comes out of dormancy. Water it ahead of time to hydrate and make the roots more pliable. Dig a hole that is as deep and twice as wide as the root ball. The crown should sit at or just about the level of the surrounding soil.
Backfill the hole, adding any amendments to enrich the soil. Water it in thoroughly. Hibiscus plants are moisture lovers, so they need regular watering for several months after planting. If you’re planting more than one, space them about two to three feet apart.
Search