In truth, no one knows, I had a 4yr old Eucalypt die from those red spots, other Eucalypts near by are doing just fine. No new black spots. https://www.gardeningknowhow.com/plant-problems/disease/treating-root-rot-gardening-tips-for-housplants.htm, On my Eucalyptus tree, most of the leaves have gone brown and brittle. Does a Eucalyptus Tree Turn Brown in the Winter?. Yet, the tree itself, does not look well.I am thinking the blotching of the leaves reflects some general unwellness of the plant, and not a pest or disease.Please, I am no expert in this field, just my opinion.I notice two things immediately from your video and that is- your trees are planted in an area very heavy with other vegetation, and I wonder if firstly the competition of roots from grasses or other close shrubs, is affecting the trees' growth and causing a stress which is reflected in the slow growth and leaf markings (and I wonder if the markings are just a prelude to the death of those leaves_Secondly I notice your lovely dogs, but I wonder if on your walks, your dogs may urinate on or immediately near the tree, in which case there may be an adverse reaction to the concentrated nitrogen.Finally I am sorry again not knowing your area, there may be factors of soil, rainfall, weather, any of which might contribute to ill-health of a young plant which is grown in a "new home".The type and depth of soil, watering, coldness or heat, fertilizing or otherwise might all be factors.I hope your trees survive - do you know their species?RegardsAlison. Sign up to get all the latest gardening tips! Good luck with your trees. I have a tall established eucalyptus tree in the back garden. They usually measure between 1.5 to 6.5mm. It may be easier if you post in the Australian photo gallery, then you can post here that you have done so. The tree seemed fine all over the winter and did not seem bothered by the snow. A fungal infection causes browning foliage. Silver Dollar Eucalyptus, Brown Spots. We have no trouble understanding you.You can only post a photo in this thread, if you have a link to another source of the photo, or embed the photo within your message but right now I forget how. Thank you. I personally like neem oil, as it kills any fungus and any pests that may be attacking the tree. This article will help: My fig has black spot on a few leaves as well, since we have had a good deal of rain and mine is in a pot. 1996). Sap is not typically a big problem with these trees unless there is a pest problem or disease present. ~Also - siting could be a problem; if it is sited so that it is prone to cold winds etc., this could cause the leaves of a young tree to go brown. irregular to rounded, with diffuse borders and 1-2 cm in diameter (Wingfield et al. I am very much a beginner when it comes to gardening - this is the first I have ever had - and am worried that it might be diseased. She has seen no seed pods. This is a serious disease that attacks young shoots, cuttings, seedlings or a mature tree that has sustained damage. Cut back on watering and check the roots for root rot. Lerps on leaves can be up to about 1/8 inch in diameter and 1/12 inch tall and resemble an armored scale. What's ... Silver Dollar Eucalyptus, Brown Spots - I have a Eucalypt Leucoxolon which is about 4 meters tall. Instead he suggested it might be Oedema or Septoria blight. Eucalyptus roots tend to be shallow compared to other trees, going down about 6-10 feet normally. I've noticed the leaves are turning … Cutting Back Eucalyptus - Our eucalyptus tree is about 15 m tall and starting to block sun on the neighbor's garden. I spray water over the plant every other day, water every other day. 7 - Cankers caused by Mycosphaerella cryptica on Eucalyptus delegatensis twigs. Looking around the neighboorhood all the Eucalyptus tree seem to have the same symptoms. Is it ... https://www.gardeningknowhow.com/ornamental/trees/eucalyptus/eucalyptus-pruning.htm, https://www.gardeningknowhow.com/plant-problems/disease/treating-root-rot-gardening-tips-for-housplants.htm. In containers, they should be watered once a day in temps under 85 degrees F and twice a day in temps over 85 degrees F. Keep up to date with all that's happening in and around the garden. Is there any ... Eucalyptus Propagation - My friend has a well established Eucalyptus tree. 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