I am pretty new to the bonsai world and looking for some help with a struggling tree. I have a Shimpaku Juniper that belonged to someone’s estate. I bought it in February and it was doing well at first, but over the last month or so it has started turning yellow and some of the branches are dying (see photos below). I am not sure when it was last reported but the soil feels pretty firm and compacted. I have been fertilizing it with Osmocoat and liquid miracle grow fertilizers, like all my other bonsais. I also water it once or twice a day, depending on the weather in Concord, which can get pretty warm at times.
Does anyone have any idea what might be causing the yellowing/browning of the branches and how I might be able to help this tree out?
Thanks for your help,