Troubleshooting
Aptos Blue Redwood problems — and how to fix them
Aptos Blue Redwood (Sequoia sempervirens 'Aptos Blue') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Spider mites in hot, dry conditions
Hot, dry summers encourage spider mite infestations, visible as stippled, bronzed needles. Increase irrigation, raise humidity around the canopy, and apply insecticidal soap or horticultural oil early in the season.
Cankers from mechanical damage
Redwoods are susceptible to Botryosphaeria canker if bark is wounded. Avoid lawn mower and strimmer contact; prune only in dry weather with sterilised tools.
Summer leaf scorch on new growth
Young pendulous shoot tips may scorch in intense reflected heat or persistent dry winds. Water deeply and site away from heat-reflecting walls in hot inland gardens.
Prevent aptos blue redwood problems before they start
Most aptos blue redwood issues are care-mismatch, not bad luck. Dial in the basics:
Aptos Blue Redwood problems — FAQ
Why is my aptos blue redwood spider mites in hot, dry conditions?
Hot, dry summers encourage spider mite infestations, visible as stippled, bronzed needles. Increase irrigation, raise humidity around the canopy, and apply insecticidal soap or horticultural oil early in the season.
Why is my aptos blue redwood cankers from mechanical damage?
Redwoods are susceptible to Botryosphaeria canker if bark is wounded. Avoid lawn mower and strimmer contact; prune only in dry weather with sterilised tools.
Why is my aptos blue redwood summer leaf scorch on new growth?
Young pendulous shoot tips may scorch in intense reflected heat or persistent dry winds. Water deeply and site away from heat-reflecting walls in hot inland gardens.