50 or more
There are 50 or more reports for the following species as of January 10, 2026.
Quercus agrifolia 797
Pinus radiata 592
Hesperocyparis macrocarpa 553
Eucalyptus globulus 385
Quercus lobata 363
Pinus pinea 191
Liquidambar styraciflua 173
Quercus kelloggii 156
Fraxinus velutina 146
Sequoia sempervirens 136
Pinus halepensis 132
Acacia melanoxylon 124
Quercus wislizeni 111
Eucalyptus sideroxylon 111
Pyrus calleryana 109
Quercus chrysolepis 88
Pseudotsuga menziesii 81
Cedars deodora 75
Umbellularia California 74
Calocedrus decurrent 73
Pinus attenuata 62
Quercus douglasii 54
Eucalyptus camaldulensis 53
Eucalyptus viminalis 53
Report numbers for species do not provide an assessment of the frequency of failure for the species (i.e., how often a species fails relative to its occurrence in a population of trees). Rather, it is likely the data reflect the relative abundance of a species in the areas from which reports are being received. See CTFRP Statistics/Origin of Reports. Also, see Failure Photos for examples of root, trunk and branch failures of the 50 or more group.
Species Photos
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