Hibiscus moscheutos 'LUNA WHITE®'

Hibiscus moscheutos
Hibiscus moscheutos  'LUNA WHITE®'
swamp mallow
SIZE/TYPE mid-sized perennial
 small shrub
USUAL WIDTH 0.4-0.6m
LEAVES deciduous broadleaf
COLOUR OF FLOWERS combined:white and red
BLOOMING TIME August - October
LOCATION full sun
USDA zone (lowest) 6   (down to -23°C)
FOR ZONE 5+6 Code of winter protection zone 5+6
FOR ZONE 7 Code of winter protection zone 7
Summer blooms
Swamp mallow has been a sought after plant over the past couple of years and its popularity is rising as new varieties keep coming to the market. American breeder Ellen Leue from the Ball Horticultural Company in Illinois is behind the LUNATE® series of so far 4 attractive varieties (by 2019): White, Blush, Red, and Rose.

LUNA WHITE® is the white version of swamp mallow from the Luna® series bred in 2000. The flowers are white with a small red eye in the centre and a short pistil with numerous light beige anthers. It is a compact, dense growing perennial with sturdy stems and bushy growth. Deadheading of spent flowers and regular fertilizing from early August will encourage formation of new flower buds. Deciduous leaves are heart-shaped, medium green, and turn yellow in autumn. They do not have lobes like other hibiscus species.

Swamp mallow and its hybrids are commonly suited for regular garden soil of any pH, just make sure it does not dry out. In hot and dry summers it is dependent on regular watering and feed supply. Use fertilizers with enough phosphorus for abundant flowering, or any other quick-release fertilizers where nitrogen is not predominant. Any fertilizing has to stop by end September. Still, nitrogen-based fertilizer is useful when the plant wakes up from dormancy in mid spring, but should not be used longer than 8 weeks. Hardy hibiscus emerges very late, sometimes as late as in late May.

For healthy growth and profuse flowering it needs a sunny location with a lot of moisture which can be achieved by good mulching. The soil has to be fertile and can be clay and boggy, never let it dry out either in summer or during dry winters - its fleshy roots need some moisture also in winter. Hardy to about -23°C (USDA zone 6). Protect the bottom of the stems from direct sunlight with plenty of mulch or fir branches during winter. Cut back the plant some 7 cm above ground level in spring after all frosts.

Last update 13-08-2008; 26-09-2019
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Hibiscus moscheutos

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Hibiscus moscheutos
  • STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
  • DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
  • EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
  • STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
  • HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
  • SHRUB - a woody plant with branches growing bushy from the ground level.
  • HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
  • FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
  • GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
LARGE PLANTS over 150 cmspecimens, screening and hedging shrubs

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