Quercus kelloggii #021.1990A
photographs © James MacEwen more info
Plant Accession Number:
021.1990A
Accepted Name:
Quercus kelloggii Newb.
Common Name:
California black oak
Accession Date:
Jul 1, 1990
Date of Planting:
1990
Garden Area:
West of Tapir Orchard
Recorded Heights:
| Height | Date |
|---|---|
| 2.4 Metres | Apr 19, 2008 |
| 4 Metres | Aug 15, 2009 |
| 5 Metres | Jun 1, 2011 |
| 4 Metres | Mar 16, 2012 |
Group:
section Lobatae (the red oaks)
Taxon Description:
A large deciduous tree reaching 25 m or more in pine/oak forests on mountain slopes, this is the only oak in the western United States that resembles the eastern red oaks such as Q. coccinea. The leaves are broadly elliptic in outline, to 20 cm long and deeply cut into 7-11 lobes, each of which ends in several bristle-tipped points. They are glossy deep green above, paler and nearly smooth beneath, or tomentose in forms from the south of the range that have been introduced recently. Acorns oblong to 4 cm long, ripening in the second year and borne singly or in clusters of up to three on a short stalk. In cultivation by 1873 it has reached 21 m at Tortworth Court, South Gloucestershire and Borde Hill, West Sussex.It has grown slowly here. One tree planted in 1990 is now 5 m tall and completely hardy.
Categories:
- Quercus Species
Natural Range:
- USA (Calif, SW Oregon)