| Two Outstanding National Arboretum
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| | waxy substance. Both are also virtually
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| Introductions
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| | sterile so they produce no unwanted
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| Three different plants are commonly
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| | seedlings, which are the bane of the
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| called Hibiscus - the tropical
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| | common Rose-of-Sharon. Sterility also
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| houseplant, the perennial rose mallow
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| | causes these varieties to be unusually
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| with dinner plate-sized flowers that dies
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| | long blooming as they produce more
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| to the ground each fall and the
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| | flowers in a futile attempt to set seeds.
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| Rose-of-Sharon or shrub Althea.
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| | The beautiful flowers are enhanced by the
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| Rose-of-Sharons are easy-to-grow, tall
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| | deep green glossy foliage - deeper green
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| flowering shrubs that will bring amazing
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| | than I have seen on any other
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| color to your garden throughout the
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| | Rose-of-Sharon.Either variety can be
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| summer. Native to much of Asia, they
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| | trained as a small tree or planted in
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| thrive in the heat of summer. The USDA
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| | masses as a screen. 'Diana' and 'Helene'
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| has introduced four cultivars of
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| | are particularly attractive planted
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| Rose-of-Sharon over the years. Two are
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| | around a deck, patio or swimming pool -
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| unimpressive; two are outstanding - in
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| | either in the ground or in pots.Planting
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| our opinion the two best Rose-of-Sharon
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| | and CarePlant in full sun; will grow and
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| in existence: Hibiscus syriacus 'Helene'
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| | bloom in moderate shade. Tolerant of a
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| and Hibiscus syriacus 'Diana.''Helene'
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| | broad range of soil moisture conditions
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| produces gorgeous, pure white flowers
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| | from moist to, once established, quite
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| with prominent ruby red throats. 'Diana'
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| | dry. Will not tolerate soggy soils. Use a
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| produces waxy, pure white flowers.Both
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| | handful of Plant-Tone fertilizer in early
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| are a vase shaped, multi-stemmed
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| | spring. If necessary, prune in spring
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| deciduous shrubs with a vigorous upright
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| | before the leaves appear. Rated as deer
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| growth habit. They mature to a height of
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| | resistant. Hardy in Zones 5 - 9. Alan
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| 8-12 feet by 6 feet wide and can be
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| | Summers, president of Carroll Gardens,
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| trained as a large shrub or a small tree.
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| | Inc., has over 30 years experience in
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| Both varieties produce flowers with broad
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| | gardening and landscape design.
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| overlapping petals of an unusually heavy
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