Specialist in the Diagnosis of Plant Problems
in Horticulture, Arboriculture and Agriculture

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Affiliations and Links

Links to Other Professional Organizations of interest



Arbor Day

California Invasive Plant Council

California Native Plant Society

California Tree Failure Report Program

Entomology & Nematology Dept., U. C. Davis

Environmental Toxicology U. C. Davis

International Tree Failure database

Mycological Society of North America

National Register of Big Trees

Nematode information, from the Society of Nematologists

Phytopathological Society of America
Sudden Oak Death in California

Weed Research and Information Center, UC

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Echeveria 'Arlie Wright'
Echeveria
'Arlie Wright'
Crassulaceae
Mexico
Orchid rockrose
Cistus x purpureus
Orchid rockrose
Cistaceae
Mediterranean regions


Coast live oak
Quercus agrifolia
Coast live oak
Fagaceae
wood grain of fallen tree
Northern California


black aeonium
Aeonium arboreum `Zwartkop'
Crassulaceae
black aeonium
Gran Canaria