Help me save my Dracaena Marginata!
I'm a beginner to plants. I bought a sickly dracaena marginata from a grocery chain a few months ago, with the hopes of healing it. It's doing much better now in springtime, but is still suffering from the following problems:
bent or partially torn leaves
spotted brown dry spots on leaves
one stalk that is really in bad shape.
The stalk concerns me the most. Its leaves are now all dried and yellow, and when I squeezed the stalk, I found it was all hollow at the bottom, like paper! (The other two healthy stalks are solid and firm). The top of the bad stalk is moist, which is why it appears darker in the photo. However, you can also see it appears by some miracle that there is a new growth growing in the middle of the dead leaves on this bad stalk. What do I do, cut the stalk? Cut the dead leaves? If so, how?:
This is a closeup of what appears to be new growth in the bad stalk:
I have just pruned the leaves on the two healthy stalks that were bent back too much, or split in the center, or had brown spots. I usually cut the bad leaf in a pointy shape at the end, but I am not sure if I pruned correctly:
This is the entire plant in full size:
This is the top of one of the good stalks, but it had bad leaves, which had to be cut very short. Will these ever grow back normally?:
There are still some brown spots on the leaves. I wasn't sure if I should prune these leaves also to remove the brown spots, or if it is better to let them be and accept the unsightly spotting?:
Now that the weather is nice and fair outside (not raining much either here in Montreal Canada), should I put this plant on my balcony and let it get natural sun and rainwater, to heal it well, or will this make things worse for the plant?
If kept indoors, is it best to keep it right near a window or a few feet away from one?