'Sonoma' is an early-flowering cultivar of the choice dove tree (or handkerchief tree) – in fact, this particular cultivar is a Great Plant Pick.
Davidia involucrata is often considered to be the only member of its genus, though not always; Wikipedia discusses the occasionally recognized Davidia vilmoriniana. One species or two, the genus remains endemic to China. This wasn't always the case, as the genus Davidia was once widespread across North America (see: Manchester, SR. 2002. Leaves and fruits of Davidia (Cornales) from the Paleocene of North America. Systematic Botany. 27(2):368-382). Dr. Steven Manchester, author of the cited paper, has included some of the images online from a fossil North American Davidia: Davidia antiqua leaf, Davidia antiqua fruit 1 and Davidia antiqua fruit 2.
UBC BG Forums BPotD Submissions Pics of the Day: Images of the species Davidia involucrata, photographed in the Riverview Arboretum (Coquitlam, British Columbia) by jimmyq@UBC-Forums.
Photography resource link: The Essential Landscape: Artists – Stand Up For Your Art!, an opinion piece by Guy Tal for Nature Photographers Online that advocates against the use of rigid definitions on what is considered “true” nature photography.
Davidia involucrata - Z6 - RHS Index of Garden Plants, Griffiths
Davidia involucrata - Z6-8 - A-Z Encyclopedia of Garden Plants, Brickell, Cole, Zuk
Davidia involucrata - 'It is perfectly winter hardy and will thrive in every kind of fertile soil'. - Hillier Manual of Trees & Shrubs, 2003
(moved this question here - Daniel)
Listed on web site of Sonoma Horticultural Nursery as 'SHN' and not as 'Sonoma'.
When I first saw this cultivar mentioned the interest was in it having oversize bracts, which I think is probably why it was selected. The blooming of small propagules would be a bonus, likely not discovered until after it began to be built up and distributed. Possibly other grafted dove trees also bloom small, although not maybe AS small--and young specimens of 'SHN' do not produce the larger bracts.
Est-il possible de réussir le Davidia involucrata dans la zone 10 ? Merci de repondre