Hibiscus
Mahogany Splendor (Hibiscus acetosella 'Mahogany Splendor') is a breathtaking ornamental hibiscus grown primarily for its spectacular deeply cut, maple-like foliage in rich shades of burgundy, mahogany, and near-black. Often mistaken for a Japanese maple from a distance, this fast-growing tropical perennial creates a dramatic architectural presence in the landscape while requiring far less maintenance than many woody ornamentals. Throughout the growing season, its richly colored foliage provides a bold backdrop for flowering plants, while mature specimens may produce attractive crimson-red hibiscus blooms in late summer and fall in warm climates.
Growing 4 to 6 feet tall in a single season, Mahogany Splendor forms a dense, upright shrub-like habit that makes an outstanding focal point in beds, borders, and containers. Its striking foliage color remains vibrant even during the hottest days of summer, providing continuous visual interest from planting time until frost. In cooler climates it is grown as a dramatic annual, while in frost-free regions it behaves as a tender perennial or small shrub.
Garden Uses
Mahogany Splendor is ideal for tropical gardens, mixed borders, patio containers, foundation plantings, privacy screens, and dramatic specimen plantings. Its bold foliage creates exceptional contrast with chartreuse, silver, white, pink, and golden flowering plants while adding height and texture to mixed annual and perennial displays.
It combines beautifully with coleus, ornamental grasses, elephant ears, cannas, salvias, lantana, zinnias, purple fountain grass, and bright tropical flowers. Large patio containers also showcase its dramatic foliage exceptionally well throughout the growing season.
Growing Information
Mahogany Splendor thrives in full sun where the foliage develops its richest color, although it tolerates light afternoon shade in extremely hot climates. It prefers fertile, well-drained soil enriched with organic matter and benefits from regular watering during periods of prolonged drought. Mature plants typically reach 4 to 6 feet tall with a spread of 3 to 4 feet.
Seeds should be started indoors approximately 6 to 8 weeks before the last expected frost or sown outdoors after soil temperatures have warmed. Sow seeds about ¼ inch deep in moist seed-starting mix and maintain temperatures between 70 and 80°F. Germination usually occurs within 7 to 21 days.
Pinching young plants encourages fuller branching and produces a bushier, more compact habit. Regular feeding during the growing season promotes vigorous growth and the deepest foliage coloration. In colder climates, plants may be lifted and overwintered indoors or treated as annuals.
Venice Mallow (Hibiscus trionum) is a charming old-fashioned annual hibiscus admired for its unique creamy-yellow flowers highlighted by a dramatic deep maroon to purple center. Sometimes known as Flower-of-an-Hour because each individual bloom opens for only a single day, the plant continually produces fresh blossoms over many weeks, ensuring a constant display throughout the summer. The delicate flowers, paired with attractive deeply lobed foliage and unusual inflated seed pods, make this heirloom species a favorite for cottage gardens, wildflower meadows, and naturalized landscapes.
Native to parts of Europe, Africa, and Asia, but naturalized across much of North America, Hibiscus trionum grows quickly into bushy plants reaching 18 to 36 inches tall. The soft yellow flowers resemble miniature tropical hibiscus, opening in the morning sunshine before closing later in the day. Although each bloom is short-lived, dozens of new flowers continue appearing throughout the growing season, creating an ever-changing display of color.
Garden Uses
Venice Mallow is an excellent choice for cottage gardens, heirloom gardens, wildflower meadows, pollinator gardens, prairie plantings, and sunny borders. Its relaxed growth habit allows it to mingle naturally among cosmos, zinnias, bachelor buttons, coreopsis, ornamental grasses, and other informal flowering plants.
It also performs well in raised beds and larger patio containers where its distinctive flowers and ornamental seed pods can be appreciated up close. The attractive lantern-like seed capsules add interest even after flowering has ended.
Growing Information
Venice Mallow thrives in full sun and prefers well-drained, moderately fertile soil. It adapts readily to sandy, loamy, or average garden soils and tolerates periods of dry weather once established. Mature plants generally reach 18 to 36 inches tall with a spread of 12 to 18 inches.
Sow seeds directly outdoors after the danger of frost has passed or start indoors 4 to 6 weeks before the last frost. Plant seeds approximately ¼ inch deep and maintain soil temperatures between 70 and 75°F. Germination typically occurs within 7 to 14 days.
Once established, plants require little maintenance beyond occasional watering during prolonged drought. Deadheading is unnecessary, although removing mature seed pods will encourage continued flowering if self-seeding is not desired.
Luna Rose (Hibiscus moscheutos 'Luna Rose') is a spectacular hardy hibiscus that produces enormous rose-pink flowers measuring 6 to 8 inches across, bringing a tropical appearance to perennial gardens in even the coldest climates. Part of the award-winning Luna Series, this compact selection combines massive blooms with a tidy, well-branched habit, making it ideal for borders, containers, and smaller landscapes. Each satiny flower features overlapping rose-pink petals surrounding a striking deep crimson eye, creating an unforgettable display from midsummer until early fall.
Unlike tropical hibiscus, Luna Rose is fully winter hardy, dying back to the ground each autumn before returning with vigorous new growth each spring. Mature plants form dense mounds approximately 2 to 3 feet tall and wide, producing dozens of spectacular blooms over an extended flowering season. The lush green foliage provides an attractive backdrop for the giant blossoms while giving the garden a distinctly tropical character.
Garden Uses
Luna Rose is perfect for perennial borders, cottage gardens, rain gardens, pollinator gardens, water features, foundation plantings, and large patio containers. Its compact habit allows it to fit comfortably into smaller gardens where traditional hardy hibiscus varieties might become too large.
The enormous rose-pink flowers combine beautifully with ornamental grasses, echinacea, rudbeckia, Joe Pye weed, salvias, veronica, liatris, swamp milkweed, and blue flowering perennials. It also makes an outstanding specimen plant where its spectacular blooms can be appreciated up close.
Growing Information
Luna Rose thrives in full sun and prefers fertile, moisture-retentive, well-drained soil rich in organic matter. Although it appreciates consistent moisture, established plants tolerate short periods of drought remarkably well. Mature plants generally reach 24 to 36 inches in height with a similar spread.
Seeds may be started indoors 8 to 10 weeks before the last spring frost or sown directly outdoors after danger of frost has passed. Sow seeds approximately ¼ inch deep and maintain temperatures between 70 and 75°F. Germination generally occurs within 10 to 21 days.
Water regularly during active growth, especially during hot weather. Applying compost each spring encourages vigorous growth and abundant flowering. Since blooms are produced on new growth, plants may be cut back completely after frost or in early spring before new shoots emerge.
Thai Red Roselle (Hibiscus sabdariffa) is a beautiful and highly useful tropical hibiscus grown for its brilliant crimson calyxes, attractive hibiscus-like flowers, and numerous culinary and herbal uses. Native to tropical Africa but cultivated throughout Southeast Asia, the Caribbean, and Central America for centuries, Thai Red Roselle has become one of the world's most versatile garden plants. During late summer and autumn, the creamy yellow flowers with deep burgundy centers are followed by thick, fleshy ruby-red calyxes that are harvested to make teas, juices, jams, jellies, sauces, wines, and traditional herbal beverages.
Growing quickly into an attractive shrub 4 to 7 feet tall in a single season, Thai Red Roselle combines ornamental beauty with practical value. The handsome deeply lobed foliage, colorful stems, striking flowers, and brilliant red seed pods create months of visual interest before the flavorful calyxes are ready for harvest. Few plants offer such an attractive combination of landscape beauty and edible harvest.
Garden Uses
Thai Red Roselle is an outstanding addition to edible landscapes, tropical gardens, cottage gardens, pollinator gardens, vegetable gardens, and mixed ornamental borders. Its colorful stems and foliage provide an attractive backdrop for flowering annuals while the bright red calyxes become a striking ornamental feature during late summer.
It combines beautifully with ornamental grasses, cannas, salvias, zinnias, marigolds, okra, peppers, bananas, and other tropical-looking plants. Roselle also performs very well in large patio containers where both its beauty and harvest can be enjoyed up close.
Growing Information
Thai Red Roselle thrives in full sun and warm temperatures, preferring fertile, well-drained soil enriched with organic matter. Plants typically reach 4 to 7 feet tall with a spread of 3 to 5 feet, depending on growing conditions and season length.
Sow seeds indoors 6 to 8 weeks before the final frost or plant directly outdoors once the soil has thoroughly warmed. Sow seeds approximately ½ inch deep and maintain temperatures between 75 and 85°F for best germination. Seeds generally sprout within 7 to 14 days.
Provide regular watering during establishment and moderate fertilization throughout the growing season. Flowering usually begins as day length shortens in late summer, followed by the development of the thick red calyxes that are harvested while still tender and fleshy.
Rose Mallow (Hibiscus moscheutos) is one of North America's most magnificent native flowering perennials, producing enormous tropical-looking blooms that often measure 8 to 12 inches across. Despite their exotic appearance, these spectacular plants are remarkably hardy, returning year after year even in regions with cold winters. From midsummer through early fall, sturdy stems are crowned with breathtaking flowers in shades of white, pink, rose, or crimson, often accented by a dramatic deep red eye that draws both gardeners and pollinators from great distances.
Native to marshes, riverbanks, and wetlands throughout eastern and central North America, Rose Mallow combines lush green foliage with an upright, bushy habit that typically reaches 4 to 7 feet tall. The large heart-shaped leaves provide an attractive backdrop for the dinner-plate-sized flowers, giving gardens a distinctly tropical appearance without requiring tropical growing conditions.
Garden Uses
Rose Mallow is an exceptional specimen plant for perennial borders, rain gardens, pond edges, water features, pollinator gardens, and cottage gardens. Its towering stems and enormous flowers make it an outstanding focal point in sunny landscapes where dramatic summer color is desired.
It combines beautifully with ornamental grasses, Joe Pye weed, swamp milkweed, cardinal flower, liatris, coneflowers, iris, veronica, and other moisture-loving native perennials. Large containers can also showcase younger plants, although mature specimens are most impressive when planted directly in the landscape.
Growing Information
Rose Mallow thrives in full sun and fertile, moisture-retentive soil rich in organic matter. While it naturally prefers damp locations, established plants tolerate average garden conditions if provided with regular watering during dry periods. Mature plants generally reach 4 to 7 feet in height with a spread of 3 to 5 feet.
Seeds should be started indoors 8 to 10 weeks before the final spring frost or sown directly outdoors after danger of frost has passed. Lightly nicking or soaking the seeds overnight may improve germination. Sow seeds approximately ¼ inch deep and maintain temperatures between 70 and 75°F. Germination generally occurs within 10 to 21 days.
Because flowers are produced on new growth, plants may be cut back to the ground after frost or in early spring before new shoots emerge. A layer of compost or balanced fertilizer each spring encourages vigorous growth and abundant flowering.
