I have a Japanese Black Pine and am killing it. I suspect it has some age and would really like to save it. The needles are gradually going brown and dropping off. Many of the remaining needles are developing yellow bits in their midle (presumably as unhappy precursors to dropping off too). The remaining leaves are also spreading out - and beginning to look rather sparse.
I haven't had it long. I have kept it on a windowsill. I now gather this is bad and will move it but how much light does it need? I don't think I have been overwatering it - I mist it every couple of days and water it once a week or so. The soil is very hard and if I water it with a jug, the water runs off the surface. Should I immerse it in the sink to water it? Might it need repotting?