Giant_Bonsai

Hi! This is my first post, and unfortunately it had to be here. I have a Japanese Juniper (the box said 3 years old) from a trip I went on. This is the first plant, let alone bonsai, that I have taken care of.
So I suppose you all want to know location. I'm keeping it by a window. The window is partially open at times. I do know when to water it and do my best to keep it watered properly. The temperature is dropping to about the 50's during night, so I don't really know if that's good for it or not.
Now, the symptoms. What is concerning me is the fact that the tips are turning a brownish white. My question, I suppose, is what am I doing wrong and what am I doing right?

Advertisement