1) Chionanthus virginicus Fringetree
- This deciduous small tree or shrub is native to the southeastern United States.
- Its common name refers to the slightly fragrant, spring-blooming flowers which feature airy, terminal, and drooping clusters (4-6″ long) of fringe-like, creamy white petals.
- This cutting came from a shrubby specimen located east of the Arboretum Loop Trail and north of the Viburnums.
2) Fraxinus americana ‘Rosehill’ White Ash
- This White ash cultivar ‘Rosehill’ is a seedless, broad-conical cultivar that typically grows 35-50’ tall.
- All true ash in North America have been under attack by the Emerald ash borer (EAB) beetle. It is only a matter of time before EAB finds its way to the Pacific Northwest.
- The genus Fraxinus is in its own Oleaceae (Olive family) tribe and contains between 45-65 species of mostly deciduous medium-to-large trees.
- Two Rosehill specimens can be found in our True Ash Collection, west of Azalea Way, about midway down.
3) Olea europaea ‘Frantoio’ Frantoio Olive Tree
- We currently only have one olive tree in our Mediterranean Collection located just off Arboretum Drive.
- This cultivar is touted to be one of the best for the Pacific Northwest. It is hardy to 10 degrees or below.
- Plant in a well-drained soil in full sun for best performance. Our specimen has one unripe olive. Here’s to many more ripe olives next year!
4) Osmanthus heterophyllus Holly Tea Olive
- Broad-leaved evergreen shrub or small tree, reminiscent of English Holly, hence its common name.
- Fragrant when in bloom, which is now.
- Native to eastern Asia and recommended as a good substitute for English Holly, which is a King County noxious weed of concern.
- Several mature Holly Tea Olive specimens are located in our Oleaceae bed off Azalea Way in our True Ash Collection.
5) Phillyrea latifolia var. media Green Olive Tree/Mock Privet
- This olive relative is a broad-leaf evergreen small tree or shrub native to the Mediterranean area.
- Its foliage resembles that of olive and privet, hence its common names. Its fruit is a black drupe like an olive.
- This suitable plant for Pacific Northwest gardens can grow in semi-shade (light woodland) or full sun, is not fussy about soil type, is drought-tolerant once established, and is a good hedge plant.
- Several specimens are located at the east entrance to the Viburnum display.