Troubleshooting
Pagoda Dogwood problems — and how to fix them
Pagoda Dogwood (Cornus alternifolia) 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.
Golden canker (Cryptodiaporthe)
The signature disease of this species: bright golden-yellow bark on dying twigs and branches. Worsened by drought and heat stress; prune out infected wood well below the canker and keep the tree cool and watered.
Leaf scorch
Brown, crispy leaf margins from too much sun, heat, or dry soil. Site in part shade, mulch the root zone, and water deeply in dry spells.
Dogwood sawfly / leaf miners
Larvae can skeletonize foliage in summer. Inspect undersides of leaves; hand-pick or treat localized infestations; healthy, unstressed trees usually shrug off minor feeding.
Heat intolerance
Performs poorly south of zone 7 — declines in hot, humid summers and dry soils. Choose a cool, sheltered northern-aspect site if growing near its warm-climate limit.
Prevent pagoda dogwood problems before they start
Most pagoda dogwood issues are care-mismatch, not bad luck. Dial in the basics:
Looking for pagoda dogwood in general rather than its problems? Read the full pagoda dogwood care guide — light, water, soil and feeding.
Pagoda Dogwood problems — FAQ
Why is my pagoda dogwood golden canker (cryptodiaporthe)?
The signature disease of this species: bright golden-yellow bark on dying twigs and branches. Worsened by drought and heat stress; prune out infected wood well below the canker and keep the tree cool and watered.
Why is my pagoda dogwood leaf scorch?
Brown, crispy leaf margins from too much sun, heat, or dry soil. Site in part shade, mulch the root zone, and water deeply in dry spells.
Why is my pagoda dogwood dogwood sawfly / leaf miners?
Larvae can skeletonize foliage in summer. Inspect undersides of leaves; hand-pick or treat localized infestations; healthy, unstressed trees usually shrug off minor feeding.
Why is my pagoda dogwood heat intolerance?
Performs poorly south of zone 7 — declines in hot, humid summers and dry soils. Choose a cool, sheltered northern-aspect site if growing near its warm-climate limit.