Advancing the Conservation, Study, and Cultivation of the Flora of Asia

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Join us for a presentation on English Gardeners and the Importance of Pollinators by Landscape Designer,  Maile Arnold
Saturday, August 2nd
10:00 - 11:30 am


Visit the garden, view the sculptures and meet artist Bruce Johnson 
Saturday, August 9th
(Bruce will be at Quarryhill between 9 a.m. - noon)
Click here for more info.
Thank you to all who came and 
supported our 2nd Annual 
Wild Collections, 
Expeditions for Education Fundraiser. It was a huge success due to your generosity!

IMG_9775.JPGPhotographs by Lindsay W. Olsen


Spotlight Plant 

Cornus kousa

subsp. chinensis

(QBG #2000.002)



Collected as seed at 1,550 meters in the Tian Shui City District, Wang Jia Gou, Shaanxi province, China on October 6, 1996 by James Ault, Kevin Conrad, Cui Tiecheng, Kunso Kim and Rick Lewandowski.  This deciduous dogwood is endemic to China and differs from the closely related Cornus kousa subsp. kousa (found in Japan and Korea) by having thicker leaves, a powdery colored leaf underside with occasional curly white trichomes, rounded lenticels, and a peduncle base expanded into a ring.  In the wild, it attains a height of 3-10 meters with grayish-brown, pubescent first year branches that age to reddish-brown the second year.  Flowers above the leaves, from May to July, display white to (rarely) pink bracts, 3-6 cm wide, surrounding 20-40 globose, capitate cymes, 0.7-1.0 cm, with greenish to yellowish petals.  Anther color varies from yellow to dark blue or blackish.  Beautiful, globose, red compound fruits that resemble large raspberries, 1-1.5 cm, mature in September and October and are edible, sometimes used for making wine.

Both single- and multi-stemmed habits occur within this Chinese version of the Kousa Dogwood. Typical of the genus, it requires regular water, and full sun to light shade exposure.


Founded in 1987, Quarryhill is one of the pre-eminent Asian botanical gardens globally, featuring one of the largest collections of documented, wild-collected Asian plants in the world. It is centrally located for Sonoma, Marin and Napa counties as well as greater Northern California. 

Quarryhill's core programs include:

The garden welcomes visitors and is open year-round.

Currently of Interest in the Garden
Plant Name
Common Name

Millettia dielsiana var. dielsiana

Summer Wisteria



Nelumbo nucifera



Spiraea japonica


Platycodon grandiflorus

balloon flower


Vitex negundo

Chinese Chaste Tree 

IMG_3412.JPG Aruncus sylvester