Rhododendron obtusum • Azalea

Rhododendron • Rhododendron / Azalea • シャクナゲ / ツツジ • 石楠花 / 躑躅 • shakunage / tsutsuji

Our Plant Lists describes it growing in Area Z (the only place we have it) as ‘3 bushes 3 feet tall, corolla pink, small flower and leaf, surround north side of R. kiusianum’. You will see it blooming in April, when you turn right (you can’t turn left) from the connector path and start walking north on the service road.  Most azaleas in this area are still mostly green or in buds, but both R. kiusianum and R. obtusum are in full bloom a bit ahead of you.

The two pink R. kiusianum bushes grow close enough to look like one, and then, separated by a trunk of a larger tree (need to check what is the tree), is the clump of three R. obtusum, a different shade of pink, and also from a distance looking like one spreading bush.

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SJG 4/21/15 – This is what you will see strolling N on service road in April: R. kiusianum, and R. obtusum behind it (Area Z)

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SJG • 4/21/15 – Rhododendron obtusum • Azalea, Area Z

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SJG • 4/21/15 – Rhododendron obtusum • Azalea: FLOWERS & LEAVES, Area Z

From Backyard GardenerRhododendron obtusum ( Hiryu Azalea ).  Kurume hybrids are dense, twiggy plants with small leaves and small profuse flowers. A popular heritage plant found in old gardens, especially the South. Hardy to 5 to 10 degrees F (USDA Hardiness Zone 7a), this beautiful flowerer has been overused as a foundation plant. Popular cultivars include ‘Coral Bells’ a pink, ‘Hershey Red’ a bright red, ‘Hexe’ crimson, ‘H. H. Hume’ white, ‘Hino-crimson’ bright red, ‘Hinodegiri’ cerise red, ‘Sherwood Orchid’ red violet, ‘Sherwood Red’ orange red, and ‘Snow’ a white. […] Important Info: Leaves and some flowers poisonous. […]

From Easy BloomHiryu Azalea Hinodegire (Rhododendron obtusum x obtusum)
This Japanese native azalea is a natural dwarf in the wild that only reaches about 18″ high and 36″ across. It will get fairly loaded up with trusses of red flowers around the middle of spring. Has a nice tight evergreen form that looks great in the winter. […]

From: Royal Horticultural SocietyRhododendron (Obtusum Group) ‘Hinomayo’ (EA). • • • Other common names: rhododendron ‘Hinomayo’
• Genus: Rhododendron can be evergreen or deciduous shrubs or trees, with simple leaves, sometimes with a dense colourful indumentum of hairs on the lower side, and funnel-shaped, bell-shaped or tubular flowers that may be solitary or in short racemes
• Family: Ericaceae / Ericaceae
• Detail: ‘Hinomayo’ is a small, spreading shrub to 60cm tall, with neat glossy, light green leaves and clear bright pink, funnel-shaped flowers 3cm wide in late spring and early summer

Question to Hiroko-san: Why different Japanese terms (Hiryu, Hinodegire, Hinomayo) about the same azalea?  Does it have something to do with description of color patterns?

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