If that juniper really is a "Nana" it is hardy up to zone 5.
zanger wrote: I was reading where it was probably that one mistake in watering that is causing my leaves to be dry and crunchy.
I also read that most bonsai (not sure about Junipers) can survive in 20 to 30F temperatures (they call this the dormant period) and that the bonsai may lose all of it's leaves. They also said that the bonsai needs intense light.
Do you agree with this? I found this at https://www.evergreengardenworks.com/indoors.htm
Trees that are hardy to zone 5 can survive temperatures of -20 to -10 degrees F.
Denver Colorado is zone 5b So you can put it outside all year. Maybe during some of the harder freezes putting a sheet or rose box over it. That type of tree is definantly being harmed by being kept indoors.
Do like opabinia51 says to do in another thread and harden it off by putting it outside during the day and bringing it in at night for 3-4 weeks then leaving it outside for good.
I was also wondering, if I lose all my leaves, is the bonsai dead?
Or do I just keep watering it as needed and it will come back?
Your going to have to try to water it and "harden it off." Like I said before it may be too late for this tree. Lack of water will kill most bonsai very quickly, that coupled with the fact that these trees do very
badly when kept indoors.
Is losing all the leaves the dormant period or a watering issue?
Junipers are evergreens they will never lose their leaves.