Browse Forums Landscape & Garden Design 1 Oct 07, 2021 1:42 pm Hi everyone, I hope you can help! My lemon myrtle sapling (backhousia citriodora) has developed dark brown/black spots on yellowing leaves (please refer photos). I bought the plant late last year and have had it potted outside in full sun in Adelaide. It is planted in a good potting mix (cannot remember which one, around $8 a bag). When first planted I watered in twice with seasol a few weeks apart and through the winter I did not water at all - my moisture meter never dropped below half in this time. A number of times I have plucked off quite a few of the leaves which were suffering to try and stop the spread(?), but that doesn't seem to have worked. I have heard about myrtle rust, but I don't believe this is what it is (perhaps someone with more experience can correct me?), also I don't think myrtle rust has made it to South Australia. To me, it doesn't look like it matches the description. Does anyone have any advice on how I can get this plant healthy again? Thanks, Harry. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Very common on rendered homes Smaller suppliers get the lower quality raw materials 6 11859 The warning is on the sticker on the door too. Second the aluminium powdercoat 6 18191 Thankyou for your advice. We do have Caesar coming out and hopefully resolve the issue for us. 4 18740 |