I just got three Dracanea plants recently from my mother-in-law. I live up in Zone 6 and 7. I know it needs humidity and takes a long time to grow. They need repotting and one I chopped down to experiment if any parts of the plant grows. The other two I have to trim down so I can bring them into my house for the fall, winter and spring. I've never worked with these plants. I was wondering if anybody knows how to trim down the leaves without wrecking the plant. How can I get it back to shorter leaves? How do you shorten the root?