Which Dracaena? With most of them, cutting off the top will cause new sprouts to emerge from the top of the stump, though that doesn't work with all of them, and when it does work, you don't always get more than one new stalk. D. sanderiana will sometimes spontaneously produce new stalks from the base of the plant, though I'm not aware of any particular way to force that to happen.

yes - you can do it. Or you can give them a feed with a weak solution of the fish emulsion or manure tea or alfa alfa tea - weak is the word - or you can give them an epsom salt supplement - I guess 1/2 teaspoon per gallon. Or all the above. Or nothing at all. The most important thing is to keep a good eye on the plant - because tired look, loss of shine on the leaves, droopiness - it can be a sign of root rot - and the plant is going to keel over very soon. So - investigate the stem at the soil level and slightly under - and if it is it - cut the crown, remove the big leaves and reroot. good luck Irina

I thought I posted but maybe didn't hit submit or maybe it will show up twice. Swallowtail seeds tells what to do. Cut the stalks back so they will rebloom. Lucky you and hope your leg will be all better soon. Here is a link that might be useful: Pacific Giant Series Delphinium

Compost the stalks. As a deep-rooted plant, comfrey "mines" minerals from deep in the soil, so is a valuable addition to your compost pile/bin. You'll find that shoots come up all over; pull the ones that venture where not wanted and either toss them, also, into the compost, or lay by other plants as a mulch. They'll enrich the soil.