Selected Cuttings from the Washington Park Arboretum for June 2018

Ron Schmaltz
June 4 – 17, 2018
1) Kalmia latifolia Mountain Laurel
- This attractive evergreen shrub is native to the eastern United States.
- Has five-sided cup-shaped clusters of pink flowers.
- The name honors Pehr Kalm (1715-1779) and latifoliia means “Broad Leafed”.
2) Rhododendron occidentale Western Azalea
- This deciduous shrub is native to the coasts of central and southern Oregon and California.
- Fragrant, funnel-shaped flowers are borne in trusses and vary from white to pale rose, with or without a yellow blotch and sometimes streaked with darker rose markings.
- Genus name literally means Rhododendron (Rose Tree) Occidentale (Western).
3) Styrax americanus Syn Styrax americanum American Snowbell
- This deciduous shrub or small tree is native to North America, preferring wetlands and marshes.
- Showy, bell-shaped, pendulous and mildly fragrant white flowers (to 1/2″ long).
- Typically grows to 6 – 10 feet (less frequently to 15 feet) tall.
4) Leptospermum scoparium Manuka
- This broad-leaved evergreen shrub is native to Australia and New Zealand.
- Cultivars produce red, pink or white flowers in both single and double varieties. Flowers give way to small woody capsules containing tiny seeds. Bees love the flowers.
5) Exochorda racemosa Pearlbush
- This deciduous shrub is native to northern China.
- It prefers full sun to part shade and is drought tolerant.
- The genus name comes from the Greek words “exo” meaning outside and “chorde” meaning a cord referring to fibers outside the placenta in the ovary. The species name means “flowers in racemes”.
Hi Monica. I bet you did come across a Rhododendron occidentale (Western Azalea) at the Lake Wilderness Arboretum. A few species of Rhododendron are fragrant, including our native species.
I recently walked through the Lake Wilderness arboretum and instantly was met with a very sweet fragrance. I found out that I was smelling the blossoms of a rhodie or an azalea but I have never ever been near one that was fragrant. It looked similar to number 2 in the photo in blossom color. A taller shrub maybe 6-7 feet tall with limbs spaced pretty far apart… can you help?