Troubleshooting
Queensland Kauri problems — and how to fix them
Queensland Kauri (Agathis robusta) 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.
Frost damage
Frost-tender; plant only in frost-free or near-frost-free climates (USDA zone 9+). Young trees are especially vulnerable.
Root rot
Waterlogged soils cause root decline; ensure excellent drainage in the planting site.
Scale insects
Occasional infestations on stems; treat with horticultural oil in early spring or summer.
Resin flow
Damaged bark exudes large amounts of resin; avoid mechanical damage to the trunk.
Prevent queensland kauri problems before they start
Most queensland kauri issues are care-mismatch, not bad luck. Dial in the basics:
Queensland Kauri problems — FAQ
Why is my queensland kauri frost damage?
Frost-tender; plant only in frost-free or near-frost-free climates (USDA zone 9+). Young trees are especially vulnerable.
Why is my queensland kauri root rot?
Waterlogged soils cause root decline; ensure excellent drainage in the planting site.
Why is my queensland kauri scale insects?
Occasional infestations on stems; treat with horticultural oil in early spring or summer.
Why is my queensland kauri resin flow?
Damaged bark exudes large amounts of resin; avoid mechanical damage to the trunk.