index KINDOM PLANT KINDOM phylum TRACHEOPHYTA (VASCULAR PLANTS) phylum SPERMATOPHYTA (SEED PLANTS) phylum ANGIOSPERMAE (FLOWERS) CLASS DICOTS CLASS ROSIDAE ORDER ROSANAE ORDER FABALES FAMILY FABACEA SUB FAMILY FABOIDEAE
Species douglasii

Species douglasii
Blue Oak



BBALLBLU Inception: Early Cretaceous

BBALLBLU Bark light gray to white.

BBALLBLU Native to the foothills Central Valley of California
Ancient tree specializing in drought and dry climates.

BBALLBLU Leaves:
dark blue-green top,yellow-green bottom
7 lobes
A waxy (unpermiating) coating
Thick, tough, dull blue, leaves
If heat is seveir tree will go into early dormancy in the summer. Leaves are dropped early.



BBALLBLU Male flowers are yellow-green catkins. Female flowers are small.
Flowers are unisexual and wind pollinated


BBALLBLU 30 ft high
Very slow growers. to 500 years old. Emphasis on quick, extensive roots.
Roots to 80ft down.
Winter deciduous tree


BBALLBLU Hybridizes with
Shrub Live Oak (Species Quercus. turbinella),
Valley Oak (Species Q. lobata)
Oregon White Oak (Species Q. garryana)


RULERBOWGIF