I have a dracaena marginata. Normally, it had long slender green leaves with maroon edges.
I had it in a low-light living room and it didn't seem to be doing to well to me. It's leaves were drooping and there were quite a few red, dying leaves. Also, it had fewer leaves than healthier ones I've seen. I moved it to another room that gets a good amount of indirect light from the southwest. In the past few days, it's been about 20 degrees hotter than usual and brighter than usual. Now the draecana is doing worse. It has even fewer leaves and a lot are getting yellow, than brown-red and dying. The new leaves that sprout out of the top are dying right away.
I water this plant whenever the top inch of soil is dry.
What can I do to improve the health of this plant? Is it having a hard time adapting to more light? Is it having a hard time dealing with the changing temperature (90 rather than 70)? Too much water? Too little water?
Also, when does a dracaena marginata get to the point where it no longer can be salvaged? How many leaves does it need to stay alive? Can it come back?
Thanks