Question: I was given a kalanchoe as a gift. It has bloomed for many weeks, but now it seems to be finished. Can I get it to regrow and flower again?
Answer: Yes, but it would really help if you had a greenhouse. Cut it back by 50 percent or more and repot it. Grow it in really bright light for several months, until the plant is 8 to 10 inches tall. At that point you can give it artificially long nights by pulling shade fabric over it for 14 consecutive hours every day. You can also put a cardboard box over the plant – anything to keep the light away from its growing tips. During the day, however, it will still need that really bright light. It should start flowering a couple of months after you start this process.