Alphabetical Plant Listing

Hibiscus 'Mars Madness' (Rose Mallow)

Rose Mallow 'Mars Madness', Hardy Hibiscus 'Mars Madness'


Hibiscus 'Mars Madness' (Rose Mallow) is a well-branched, deciduous shrub with large, magenta-red flowers, up to 8 in. across (20 cm), adorned with a small darker red lustrous halo. Their overlapping petals, with deeply impressed veins, unfurl as the countless buds open to become wide and flat. Blooming continuously from mid to late summer, each flower lasts about one day and stands out against the foliage of dark olive green leaves with copper highlights. The blossoms are produced from the top to the bottom of the plant, rather than only at the top like some older cultivars. Perfect backdrop or centerpiece for a sunny border. Great for containers too.

  • Typically grows up to 4-5 ft. tall (120-150 cm) with a spread of 6-7 ft. (180-210 cm).
  • A full sun to part shade lover, this plant is best grown in average, medium moisture, well-drained soils.
  • Fairly pest and disease free. Watch for aphids, mealybugs and thrips. Deer resistant.
  • Plant in shrub borders or large containers for dramatic summer blooms.
  • Cut it down in spring before new growth appears.

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Requirements

Hardiness 4 – 9
Heat Zones 1 – 8
Climate Zones 2A, 2B, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, H1
Plant Type Shrubs
Plant Family Hibiscus
Exposure Full Sun, Partial Sun
Season of Interest Summer (Mid,Late)
Height 4' – 5' (120cm – 150cm)
Spread 6' – 7' (180cm – 210cm)
Spacing 84" (210cm)
Water Needs Low, Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Showy
Tolerance Deer
Attracts Butterflies, Hummingbirds
Garden Uses Beds and Borders, Patio and Containers
Garden Styles City and Courtyard, Informal and Cottage

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Photo courtesy of Walters Gardens Inc

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 4 – 9
Heat Zones 1 – 8
Climate Zones 2A, 2B, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, H1
Plant Type Shrubs
Plant Family Hibiscus
Exposure Full Sun, Partial Sun
Season of Interest Summer (Mid,Late)
Height 4' – 5' (120cm – 150cm)
Spread 6' – 7' (180cm – 210cm)
Spacing 84" (210cm)
Water Needs Low, Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Showy
Tolerance Deer
Attracts Butterflies, Hummingbirds
Garden Uses Beds and Borders, Patio and Containers
Garden Styles City and Courtyard, Informal and Cottage

Great Plant Combination Ideas with Hibiscus

Guides with Hibiscus

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