What's eating my brewer spruce?

Brewer Spruce, a rare California/Oregon native, shares the standard spruce pest suite. Spruce spider mites are the most likely recurring problem. Cooley spruce gall adelgid may attack in cultivation. Its extremely limited natural range means it rarely faces spruce budworm outbreaks at scale. Deer may browse landscape specimens.

Weeping branchlets develop stippled, bronzy needles with fine webbing; needle drop from older wood causes thinning of the distinctive hanging branches; worst during hot, dry spells Horticultural oil at dormancy; insecticidal soap or bifenazate miticide in cool spring or autumn; regular overhead irrigation in dry summers helps reduce mite populations

Pineapple-shaped galls at shoot tips kill the extending shoot; repeated attacks over several years distort the weeping growth habit and reduce vigor Systemic imidacloprid soil drench in early spring; prune and dispose of galls before July; dormant horticultural oil spray in late winter as an alternative

Mule deer or black-tailed deer may browse foliage from the pendulous lower branches, which hang close to the ground, leaving irregular gaps on the lower half of the tree Install wire mesh guards around the trunk base; apply repellent sprays in winter and early spring; protective fencing for young or recently planted specimens