Two adjacent 'Yoshino' cryptomerias showing mirrored dieback? Pattern suggests fertilizer misapplication, not disease.
Cryptomeria is HIGHLY fertilizer-sensitive. Granules touching foliage cause guaranteed browning in 30 days. Your pattern matches fertilizer tank/line dumping on those two trees.

cryptomeria limb dieback

cryptomeria limb dieback

cryptomeria limb dieback
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