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- Q.Dying Pittsoporum In Maui - I have a 10 yr old Pittosporum hedge that is suddenly dying off. The branches have healthy green leaves, yet ...
- Q.Hi, I Have Poittosporum Tree Around My House Its Spring Gere Nearly Summer. We Got It Pruned 2 Months Ago . The Trees Have Spots A - Hi, I have poittosporum tree around my house its spring gere nearly summer. We got it pruned 2 months ago ...
Asked by
Jcorvino on
October 2, 2023
Haiku, Maui 96708 zone 11/12?Q.Dying Pittsoporum In Maui
I have a 10 yr old Pittosporum hedge that is suddenly dying off. The branches have healthy green leaves, yet the inside of the branch is hollow. The branches have also changed color to a lights gray/white ( it is not fungus). Several tree specialist and a pesticide company believe it is not from pests. Thye said the pests are coming once the branch is dead, that they are not the cause. No pests in sight. Rarely spotting of tiny, tiny ants, but they are all over Maui. But no one is really telling me what is causing this? They want to come and prune the interior of the hedge and fertilize. Please help.
Answered by
BushDoctor on
October 3, 2023
Certified ExpertA.This looks much like termite damage. Had this been damage to the heartwood, only, it would not have sustained as much damage. The outer layer being destroyed is causing some die off. Saving the dead portions will not be possible. Cutting those off will be necessary. Treating for any termites that may be remaining can be done with permethrin:
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/applying-permethrin-in-garden.htm
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- Asked by
Emz on
November 25, 2023
AustraliaQ.Hi, I Have Poittosporum Tree Around My House Its Spring Gere Nearly Summer. We Got It Pruned 2 Months Ago . The Trees Have Spots A
Hi, I have poittosporum tree around my house its spring gere nearly summer. We got it pruned 2 months ago . The trees have white spots and patches on the trunk so i went and got the yankee pest oil concentrate and we just sprayed it yesterday, but it started to rain alot after 3 hours. Should we spray again? Also how often do we have to spray also has lots of spider webs attached to it some trees are about to die. And when can I fertilise and give some seasol after spraying? Thankyou
- Answered by
BushDoctor on
November 27, 2023
Certified ExpertA.Those growths on the tree are what is known as Lichens. They are not harmful to the tree, but can signal that it is going through some stress. It sounds like it may be spidermites. These are not easy to get rid of and you will need to find chemicals that are intended to treat them, whether this be synthetic or natural. There are many, many ways to go about this, but all require persistence. My preferred methods are Azadiracthin, from neem oil, and predatory insects like lacewings and predatory mites.
https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-treatment.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-treatment.htm
https://www.gardeningknowhow.com/ornamental/fungus-lichen/treatment-tree-lichen.htm
https://www.gardeningknowhow.com/ornamental/shrubs/pittosporum
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