Have had my LPs for nearly 5 years since the landscaping was done. All has been fine up until the last 4 months or so. Twigs / small branches have started to die - twig death happens quite quickly (2/3 days) and nothing is eating them that I can detect. Most of the 20 plants are affected but not all of them - one adjacent to one of the worst affected ones if absolutely fine for now. Have tried Eco Oil, White Oil, Pyrethrum as well as Mancozeb. The way things are going I will lose the battle. All other shrubs and trees in the garden are healthy and unaffected. I am guessing it is fungal. The death never happens at the bottom of the plant - always from the middle up and generally at the crown of the tree. Red box in the photo shows what it looks like after day or 3 - give it 2 more days and the twig will be dead and the leaves dry. We live in Marrickville Sydney. Any help at all is hugely appreciated.
What is killing my Lilli Pillis
I have no idea myself. Have you googled it?
I found these links that had info. Maybe 1 of the conditions will ring a bell.
Do the affected stems have brown areas on them?
https://www.workshop.bunnings.com.au/t5/Garden/Lilly-Pilly-die-back-Verticillium-Wilt/td-p/135633
https://havegarden.com/why-lilly-pilly-hedge-dying/
video, I haven't watched it.
https://www.youtube.com/watch?v=B_By-aW5rj8
https://ultimatebackyard.com.au/lilly-pilly-problems/
https://yardwork.com.au/backyard-maintenance/lilly-pilly-problems/
I hope someone who knows stops by.